42634513644 has 24 divisors (see below), whose sum is σ = 99740282880. Its totient is φ = 14174397264.

The previous prime is 42634513601. The next prime is 42634513681. The reversal of 42634513644 is 44631543624.

It is a junction number, because it is equal to n+sod(n) for n = 42634513596 and 42634513605.

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, 4633624 + ... + 4642815.

It is an arithmetic number, because the mean of its divisors is an integer number (4155845120).

Almost surely, 2^42634513644 is an apocalyptic number.

It is an amenable number.

42634513644 is an abundant number, since it is smaller than the sum of its proper divisors (57105769236).

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

42634513644 is a wasteful number, since it uses less digits than its factorization.

42634513644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9276829 (or 9276827 counting only the distinct ones).

The product of its digits is 829440, while the sum is 42.

The spelling of 42634513644 in words is "forty-two billion, six hundred thirty-four million, five hundred thirteen thousand, six hundred forty-four".