53689685632 has 128 divisors (see below), whose sum is σ = 123647500800. Its totient is φ = 22965120000.

The previous prime is 53689685629. The next prime is 53689685671. The reversal of 53689685632 is 23658698635.

It is a tau number, because it is divible by the number of its divisors (128).

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, 4032907 + ... + 4046197.

It is an arithmetic number, because the mean of its divisors is an integer number (965996100).

Almost surely, 2^53689685632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53689685632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61823750400).

53689685632 is an abundant number, since it is smaller than the sum of its proper divisors (69957815168).

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

53689685632 is a wasteful number, since it uses less digits than its factorization.

53689685632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13486 (or 13474 counting only the distinct ones).

The product of its digits is 55987200, while the sum is 61.

The spelling of 53689685632 in words is "fifty-three billion, six hundred eighty-nine million, six hundred eighty-five thousand, six hundred thirty-two".