161345682874 has 32 divisors (see below), whose sum is σ = 271097712000. Its totient is φ = 71569681920.

The previous prime is 161345682859. The next prime is 161345682881. The reversal of 161345682874 is 478286543161.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 498987 + ... + 756094.

It is an arithmetic number, because the mean of its divisors is an integer number (8471803500).

Almost surely, 2^161345682874 is an apocalyptic number.

161345682874 is a deficient number, since it is larger than the sum of its proper divisors (109752029126).

161345682874 is a wasteful number, since it uses less digits than its factorization.

161345682874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255318.

The product of its digits is 7741440, while the sum is 55.

The spelling of 161345682874 in words is "one hundred sixty-one billion, three hundred forty-five million, six hundred eighty-two thousand, eight hundred seventy-four".