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68074931802 = 2331365994257
BaseRepresentation
bin111111011001100101…
…010000011001011010
320111201020222211202110
4333121211100121122
52103404140304202
651135002013150
74626650241633
oct773145203132
9214636884673
1068074931802
1126963584919
121123a1a71b6
13655b677847
14341b0a488a
151b8660026c
hexfd995065a

68074931802 has 16 divisors (see below), whose sum is σ = 140541795072. Its totient is φ = 21959655360.

The previous prime is 68074931779. The next prime is 68074931819. The reversal of 68074931802 is 20813947086.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182996943 + ... + 182997314.

It is an arithmetic number, because the mean of its divisors is an integer number (8783862192).

Almost surely, 268074931802 is an apocalyptic number.

68074931802 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

68074931802 is an abundant number, since it is smaller than the sum of its proper divisors (72466863270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68074931802 is a wasteful number, since it uses less digits than its factorization.

68074931802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365994293.

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 68074931802 in words is "sixty-eight billion, seventy-four million, nine hundred thirty-one thousand, eight hundred two".

Divisors: 1 2 3 6 31 62 93 186 365994257 731988514 1097982771 2195965542 11345821967 22691643934 34037465901 68074931802