55552991088 has 120 divisors (see below), whose sum is σ = 167040475392. Its totient is φ = 15862960512.

The previous prime is 55552991083. The next prime is 55552991111. The reversal of 55552991088 is 88019925555.

It is a super-2 number, since 2×55552991088² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55552991083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4667481 + ... + 4679367.

Almost surely, 2^55552991088 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 55552991088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83520237696).

55552991088 is an abundant number, since it is smaller than the sum of its proper divisors (111487484304).

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

55552991088 is a wasteful number, since it uses less digits than its factorization.

55552991088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13899 (or 13886 counting only the distinct ones).

The product of its (nonzero) digits is 6480000, while the sum is 57.

The spelling of 55552991088 in words is "fifty-five billion, five hundred fifty-two million, nine hundred ninety-one thousand, eighty-eight".