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808148456424431 = 1312237615855563
BaseRepresentation
bin1011011111000000011011100…
…1101010111100001111101111
310220222102020102102212101101222
42313300012321222330033233
51321411201014321040211
611542442135310253555
7332136541060441163
oct26760067152741757
93828366372771358
10808148456424431
112145569212a0491
1276780702ab72bb
13288c20c3200985
141037c845cb8ca3
156366be14eb1db
hex2df01b9abc3ef

808148456424431 has 4 divisors (see below), whose sum is σ = 808149073592232. Its totient is φ = 808147839256632.

The previous prime is 808148456424389. The next prime is 808148456424437. The reversal of 808148456424431 is 134424654841808.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-808148456424431 is a prime.

It is a super-2 number, since 2×8081484564244312 (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808148456424437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306615545 + ... + 309240018.

It is an arithmetic number, because the mean of its divisors is an integer number (202037268398058).

Almost surely, 2808148456424431 is an apocalyptic number.

808148456424431 is a deficient number, since it is larger than the sum of its proper divisors (617167801).

808148456424431 is a wasteful number, since it uses less digits than its factorization.

808148456424431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617167800.

The product of its (nonzero) digits is 94371840, while the sum is 62.

The spelling of 808148456424431 in words is "eight hundred eight trillion, one hundred forty-eight billion, four hundred fifty-six million, four hundred twenty-four thousand, four hundred thirty-one".

Divisors: 1 1312237 615855563 808148456424431