647914991532 has 24 divisors (see below), whose sum is σ = 1591370155200. Its totient is φ = 204604734096.

The previous prime is 647914991489. The next prime is 647914991557. The reversal of 647914991532 is 235199419746.

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, 1420865982 + ... + 1420866437.

It is an arithmetic number, because the mean of its divisors is an integer number (66307089800).

Almost surely, 2^647914991532 is an apocalyptic number.

It is an amenable number.

647914991532 is an abundant number, since it is smaller than the sum of its proper divisors (943455163668).

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

647914991532 is a wasteful number, since it uses less digits than its factorization.

647914991532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2841732445 (or 2841732443 counting only the distinct ones).

The product of its digits is 14696640, while the sum is 60.

The spelling of 647914991532 in words is "six hundred forty-seven billion, nine hundred fourteen million, nine hundred ninety-one thousand, five hundred thirty-two".