81840762832674 has 16 divisors (see below), whose sum is σ = 163681633749312. Its totient is φ = 27280236263568.

The previous prime is 81840762832657. The next prime is 81840762832681. The reversal of 81840762832674 is 47623826704818.

It is a super-2 number, since 2×81840762832674² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8018187 + ... + 15098769.

It is an arithmetic number, because the mean of its divisors is an integer number (10230102109332).

Almost surely, 2^{81840762832674} is an apocalyptic number.

81840762832674 is an abundant number, since it is smaller than the sum of its proper divisors (81840870916638).

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

81840762832674 is a wasteful number, since it uses less digits than its factorization.

81840762832674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9007001.

The product of its (nonzero) digits is 173408256, while the sum is 66.

The spelling of 81840762832674 in words is "eighty-one trillion, eight hundred forty billion, seven hundred sixty-two million, eight hundred thirty-two thousand, six hundred seventy-four".