53387503988 has 96 divisors (see below), whose sum is σ = 120938711040. Its totient is φ = 20053163520.

The previous prime is 53387503927. The next prime is 53387503999. The reversal of 53387503988 is 88930578335.

It is a hoax number, since the sum of its digits (59) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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, 553418 + ... + 642686.

It is an arithmetic number, because the mean of its divisors is an integer number (1259778240).

Almost surely, 2^53387503988 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 53387503988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60469355520).

53387503988 is an abundant number, since it is smaller than the sum of its proper divisors (67551207052).

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

53387503988 is a wasteful number, since it uses less digits than its factorization.

53387503988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89377 (or 89375 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 59.

The spelling of 53387503988 in words is "fifty-three billion, three hundred eighty-seven million, five hundred three thousand, nine hundred eighty-eight".