641546513026155 has 96 divisors (see below), whose sum is σ = 1277283264042240. Its totient is φ = 294605627523840.

The previous prime is 641546513026129. The next prime is 641546513026171. The reversal of 641546513026155 is 551620315645146.

641546513026155 is a `hidden beast` number, since 6 + 4 + 1 + 5 + 4 + 6 + 5 + 13 + 0 + 2 + 615 + 5 = 666.

It is not a de Polignac number, because 641546513026155 - 2²⁹ = 641545976155243 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27666004 + ... + 45260366.

It is an arithmetic number, because the mean of its divisors is an integer number (13305034000440).

Almost surely, 2^{641546513026155} is an apocalyptic number.

641546513026155 is a deficient number, since it is larger than the sum of its proper divisors (635736751016085).

641546513026155 is a wasteful number, since it uses less digits than its factorization.

641546513026155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17598281 (or 17598278 counting only the distinct ones).

The product of its (nonzero) digits is 12960000, while the sum is 54.

The spelling of 641546513026155 in words is "six hundred forty-one trillion, five hundred forty-six billion, five hundred thirteen million, twenty-six thousand, one hundred fifty-five".