54731631864 has 256 divisors, whose sum is σ = 179820748800. Its totient is φ = 13485491712.

The previous prime is 54731631827. The next prime is 54731631881. The reversal of 54731631864 is 46813613745.

It is a happy number.

It is a super-2 number, since 2×54731631864² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2147307 + ... + 2172645.

It is an arithmetic number, because the mean of its divisors is an integer number (702424800).

Almost surely, 2^54731631864 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 54731631864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89910374400).

54731631864 is an abundant number, since it is smaller than the sum of its proper divisors (125089116936).

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

54731631864 is a wasteful number, since it uses less digits than its factorization.

54731631864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25434 (or 25430 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 48.

The spelling of 54731631864 in words is "fifty-four billion, seven hundred thirty-one million, six hundred thirty-one thousand, eight hundred sixty-four".