204616145531 has 16 divisors (see below), whose sum is σ = 236785770240. Its totient is φ = 173190376800.

The previous prime is 204616145509. The next prime is 204616145533. The reversal of 204616145531 is 135541616402.

It is not a de Polignac number, because 204616145531 - 2²⁶ = 204549036667 is a prime.

It is a super-2 number, since 2×204616145531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204616145533) 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, 113861 + ... + 649766.

It is an arithmetic number, because the mean of its divisors is an integer number (14799110640).

Almost surely, 2^204616145531 is an apocalyptic number.

204616145531 is a deficient number, since it is larger than the sum of its proper divisors (32169624709).

204616145531 is a wasteful number, since it uses less digits than its factorization.

204616145531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764114.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 204616145531 in words is "two hundred four billion, six hundred sixteen million, one hundred forty-five thousand, five hundred thirty-one".