53219865972 has 96 divisors (see below), whose sum is σ = 156967374592. Its totient is φ = 13656646656.

The previous prime is 53219865971. The next prime is 53219865977. The reversal of 53219865972 is 27956891235.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53219865971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 618193 + ... + 699000.

Almost surely, 2^53219865972 is an apocalyptic number.

53219865972 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

53219865972 is an abundant number, since it is smaller than the sum of its proper divisors (103747508620).

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

53219865972 is a wasteful number, since it uses less digits than its factorization.

53219865972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317257 (or 1317255 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 57.

The spelling of 53219865972 in words is "fifty-three billion, two hundred nineteen million, eight hundred sixty-five thousand, nine hundred seventy-two".