81074797683 has 16 divisors (see below), whose sum is σ = 117933791616. Its totient is φ = 49133402240.

The previous prime is 81074797627. The next prime is 81074797717. The reversal of 81074797683 is 38679747018.

It is a cyclic number.

It is not a de Polignac number, because 81074797683 - 2⁹ = 81074797171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81074797883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 604960 + ... + 726722.

It is an arithmetic number, because the mean of its divisors is an integer number (7370861976).

Almost surely, 2^81074797683 is an apocalyptic number.

81074797683 is a deficient number, since it is larger than the sum of its proper divisors (36858993933).

81074797683 is a wasteful number, since it uses less digits than its factorization.

81074797683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141954.

The product of its (nonzero) digits is 14224896, while the sum is 60.

The spelling of 81074797683 in words is "eighty-one billion, seventy-four million, seven hundred ninety-seven thousand, six hundred eighty-three".