642532244647560 has 32 divisors (see below), whose sum is σ = 1927596733943040. Its totient is φ = 171341931905984.

The previous prime is 642532244647537. The next prime is 642532244647607. The reversal of 642532244647560 is 65746442235246.

It is a super-2 number, since 2×642532244647560² (a number of 30 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 642532244647494 and 642532244647503.

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, 2677217685912 + ... + 2677217686151.

It is an arithmetic number, because the mean of its divisors is an integer number (60237397935720).

Almost surely, 2^{642532244647560} is an apocalyptic number.

642532244647560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

642532244647560 is an abundant number, since it is smaller than the sum of its proper divisors (1285064489295480).

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

642532244647560 is a wasteful number, since it uses less digits than its factorization.

642532244647560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5354435372077 (or 5354435372073 counting only the distinct ones).

The product of its (nonzero) digits is 232243200, while the sum is 60.

The spelling of 642532244647560 in words is "six hundred forty-two trillion, five hundred thirty-two billion, two hundred forty-four million, six hundred forty-seven thousand, five hundred sixty".