213691460544 has 126 divisors (see below), whose sum is σ = 646442578080. Its totient is φ = 67481448192.

The previous prime is 213691460539. The next prime is 213691460557. The reversal of 213691460544 is 445064196312.

213691460544 is a `hidden beast` number, since 2 + 1 + 3 + 69 + 1 + 46 + 0 + 544 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 213691460544.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 305904 + ... + 721775.

Almost surely, 2^213691460544 is an apocalyptic number.

213691460544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

213691460544 is an abundant number, since it is smaller than the sum of its proper divisors (432751117536).

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

213691460544 is a wasteful number, since it uses less digits than its factorization.

213691460544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027735 (or 1027703 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 213691460544 in words is "two hundred thirteen billion, six hundred ninety-one million, four hundred sixty thousand, five hundred forty-four".