53644664537140 has 48 divisors (see below), whose sum is σ = 113749831887552. Its totient is φ = 21249249357056.

The previous prime is 53644664537099. The next prime is 53644664537173. The reversal of 53644664537140 is 4173546644635.

It is a super-4 number, since 4×53644664537140⁴ (a number of 56 digits) contains 4444 as substring.

It is a congruent number.

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, 874347 + ... + 10394893.

It is an arithmetic number, because the mean of its divisors is an integer number (2369788164324).

Almost surely, 2^{53644664537140} is an apocalyptic number.

It is an amenable number.

53644664537140 is an abundant number, since it is smaller than the sum of its proper divisors (60105167350412).

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

53644664537140 is a wasteful number, since it uses less digits than its factorization.

53644664537140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9523296 (or 9523294 counting only the distinct ones).

The product of its (nonzero) digits is 87091200, while the sum is 58.

The spelling of 53644664537140 in words is "fifty-three trillion, six hundred forty-four billion, six hundred sixty-four million, five hundred thirty-seven thousand, one hundred forty".