315511640521654 has 16 divisors (see below), whose sum is σ = 492072241755600. Its totient is φ = 151542786900064.

The previous prime is 315511640521631. The next prime is 315511640521661. The reversal of 315511640521654 is 456125046115513.

It is a junction number, because it is equal to n+sod(n) for n = 315511640521598 and 315511640521607.

It is a congruent 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, 13806729364 + ... + 13806752215.

It is an arithmetic number, because the mean of its divisors is an integer number (30754515109725).

Almost surely, 2^{315511640521654} is an apocalyptic number.

315511640521654 is a deficient number, since it is larger than the sum of its proper divisors (176560601233946).

315511640521654 is a wasteful number, since it uses less digits than its factorization.

315511640521654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27613481807.

The product of its (nonzero) digits is 2160000, while the sum is 49.

The spelling of 315511640521654 in words is "three hundred fifteen trillion, five hundred eleven billion, six hundred forty million, five hundred twenty-one thousand, six hundred fifty-four".