55237869568 has 102 divisors (see below), whose sum is σ = 126621925976. Its totient is φ = 23605149696.

The previous prime is 55237869563. The next prime is 55237869571. The reversal of 55237869568 is 86596873255.

It is a super-2 number, since 2×55237869568² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55237869563) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 159186771 + ... + 159187117.

Almost surely, 2^55237869568 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 55237869568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63310962988).

55237869568 is an abundant number, since it is smaller than the sum of its proper divisors (71384056408).

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

55237869568 is an frugal number, since it uses more digits than its factorization.

55237869568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733 (or 356 counting only the distinct ones).

The product of its digits is 108864000, while the sum is 64.

The spelling of 55237869568 in words is "fifty-five billion, two hundred thirty-seven million, eight hundred sixty-nine thousand, five hundred sixty-eight".