54631432720 has 40 divisors (see below), whose sum is σ = 127719872280. Its totient is φ = 21731834880.

The previous prime is 54631432693. The next prime is 54631432721. The reversal of 54631432720 is 2723413645.

It can be written as a sum of positive squares in 4 ways, for example, as 809288704 + 53822144016 = 28448^2 + 231996^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 54631432720.

It is not an unprimeable number, because it can be changed into a prime (54631432721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1871965 + ... + 1900924.

It is an arithmetic number, because the mean of its divisors is an integer number (3192996807).

Almost surely, 2^54631432720 is an apocalyptic number.

It is an amenable number.

54631432720 is an abundant number, since it is smaller than the sum of its proper divisors (73088439560).

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

54631432720 is a wasteful number, since it uses less digits than its factorization.

54631432720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3773083 (or 3773077 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 37.

The spelling of 54631432720 in words is "fifty-four billion, six hundred thirty-one million, four hundred thirty-two thousand, seven hundred twenty".