31845155245899 has 16 divisors (see below), whose sum is σ = 44306563241472. Its totient is φ = 20306936219328.

The previous prime is 31845155245843. The next prime is 31845155245913. The reversal of 31845155245899 is 99854255154813.

It is not a de Polignac number, because 31845155245899 - 2²⁴ = 31845138468683 is a prime.

It is a super-2 number, since 2×31845155245899² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is not an unprimeable number, because it can be changed into a prime (31845155243899) 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, 11328279 + ... + 13857135.

It is an arithmetic number, because the mean of its divisors is an integer number (2769160202592).

Almost surely, 2^{31845155245899} is an apocalyptic number.

31845155245899 is a deficient number, since it is larger than the sum of its proper divisors (12461407995573).

31845155245899 is a wasteful number, since it uses less digits than its factorization.

31845155245899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2711386.

The product of its digits is 311040000, while the sum is 69.

The spelling of 31845155245899 in words is "thirty-one trillion, eight hundred forty-five billion, one hundred fifty-five million, two hundred forty-five thousand, eight hundred ninety-nine".