53995651920 has 960 divisors, whose sum is σ = 231690170880. Its totient is φ = 11496038400.

The previous prime is 53995651907. The next prime is 53995651967. The reversal of 53995651920 is 2915659935.

It is a happy number.

53995651920 is a `hidden beast` number, since 5 + 39 + 95 + 6 + 519 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 99806850 + ... + 99807390.

It is an arithmetic number, because the mean of its divisors is an integer number (241343928).

Almost surely, 2^53995651920 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 53995651920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115845085440).

53995651920 is an abundant number, since it is smaller than the sum of its proper divisors (177694518960).

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

53995651920 is a wasteful number, since it uses less digits than its factorization.

53995651920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 622 counting only the distinct ones).

The product of its (nonzero) digits is 3280500, while the sum is 54.

The spelling of 53995651920 in words is "fifty-three billion, nine hundred ninety-five million, six hundred fifty-one thousand, nine hundred twenty".