642356442146532 has 48 divisors (see below), whose sum is σ = 1523481844046400. Its totient is φ = 210597729336960.

The previous prime is 642356442146453. The next prime is 642356442146543. The reversal of 642356442146532 is 235641244653246.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8684907 + ... + 36880082.

It is an arithmetic number, because the mean of its divisors is an integer number (31739205084300).

Almost surely, 2^{642356442146532} is an apocalyptic number.

It is an amenable number.

642356442146532 is an abundant number, since it is smaller than the sum of its proper divisors (881125401899868).

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

642356442146532 is a wasteful number, since it uses less digits than its factorization.

642356442146532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45584316 (or 45584314 counting only the distinct ones).

The product of its digits is 99532800, while the sum is 57.

Adding to 642356442146532 its reverse (235641244653246), we get a palindrome (877997686799778).

The spelling of 642356442146532 in words is "six hundred forty-two trillion, three hundred fifty-six billion, four hundred forty-two million, one hundred forty-six thousand, five hundred thirty-two".