540664031664 has 60 divisors (see below), whose sum is σ = 1513686724992. Its totient is φ = 180152457600.

The previous prime is 540664031617. The next prime is 540664031693. The reversal of 540664031664 is 466130466045.

540664031664 is a `hidden beast` number, since 540 + 6 + 6 + 40 + 3 + 1 + 6 + 64 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 338832 + ... + 1093679.

Almost surely, 2^540664031664 is an apocalyptic number.

It is an amenable number.

540664031664 is an abundant number, since it is smaller than the sum of its proper divisors (973022693328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

540664031664 is a wasteful number, since it uses less digits than its factorization.

540664031664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1435146 (or 1435137 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 540664031664 in words is "five hundred forty billion, six hundred sixty-four million, thirty-one thousand, six hundred sixty-four".