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80808073731 = 32711233949853
BaseRepresentation
bin100101101000010001…
…0010101101000000011
321201120122122110202200
41023100202111220003
52310443331324411
6101042301244243
75560333202460
oct1132042255003
9251518573680
1080808073731
11312a8061910
12137b2563683
13780a683858
143ca8206667
15217e3dce56
hex12d0895a03

80808073731 has 48 divisors (see below), whose sum is σ = 145589633280. Its totient is φ = 41959431360.

The previous prime is 80808073721. The next prime is 80808073763. The reversal of 80808073731 is 13737080808.

It is not a de Polignac number, because 80808073731 - 217 = 80807942659 is a prime.

It is a super-2 number, since 2×808080737312 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80808073721) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1596001 + ... + 1645853.

It is an arithmetic number, because the mean of its divisors is an integer number (3033117360).

Almost surely, 280808073731 is an apocalyptic number.

80808073731 is a deficient number, since it is larger than the sum of its proper divisors (64781559549).

80808073731 is a wasteful number, since it uses less digits than its factorization.

80808073731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52216 (or 52213 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 80808073731 in words is "eighty billion, eight hundred eight million, seventy-three thousand, seven hundred thirty-one".

Divisors: 1 3 7 9 11 21 33 63 77 99 231 693 2339 7017 16373 21051 25729 49119 49853 77187 147357 149559 180103 231561 348971 448677 540309 548383 1046913 1620927 1645149 3140739 3838681 4935447 11516043 34548129 116606167 349818501 816243169 1049455503 1282667837 2448729507 3848003511 7346188521 8978674859 11544010533 26936024577 80808073731