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48181378753485 = 3251762982194449
BaseRepresentation
bin10101111010010000110011…
…11101110010001111001101
320022121002120010102202122100
422331020121331302033031
522303400430430102420
6250250115252305313
713101663324035445
oct1275103175621715
9208532503382570
1048181378753485
111439667624737a
1254a1a5a312239
1320b663b653013
14bc7dc3ad5125
15588495435190
hex2bd219f723cd

48181378753485 has 24 divisors (see below), whose sum is σ = 88427001007800. Its totient is φ = 24185162668032.

The previous prime is 48181378753447. The next prime is 48181378753513. The reversal of 48181378753485 is 58435787318184.

48181378753485 is a `hidden beast` number, since 4 + 8 + 1 + 8 + 1 + 3 + 7 + 8 + 7 + 534 + 85 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 306133143849 + 47875245609636 = 553293^2 + 6919194^2 .

It is not a de Polignac number, because 48181378753485 - 29 = 48181378752973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31491096460 + ... + 31491097989.

It is an arithmetic number, because the mean of its divisors is an integer number (3684458375325).

Almost surely, 248181378753485 is an apocalyptic number.

48181378753485 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

48181378753485 is a deficient number, since it is larger than the sum of its proper divisors (40245622254315).

48181378753485 is a wasteful number, since it uses less digits than its factorization.

48181378753485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62982194477 (or 62982194474 counting only the distinct ones).

The product of its digits is 722534400, while the sum is 72.

The spelling of 48181378753485 in words is "forty-eight trillion, one hundred eighty-one billion, three hundred seventy-eight million, seven hundred fifty-three thousand, four hundred eighty-five".

Divisors: 1 3 5 9 15 17 45 51 85 153 255 765 62982194449 188946583347 314910972245 566839750041 944732916735 1070697305633 2834198750205 3212091916899 5353486528165 9636275750697 16060459584495 48181378753485