55117766234320 has 20 divisors (see below), whose sum is σ = 128148806494980. Its totient is φ = 22047106493696.

The previous prime is 55117766234273. The next prime is 55117766234327. The reversal of 55117766234320 is 2343266771155.

It can be written as a sum of positive squares in 2 ways, for example, as 21608440686144 + 33509325548176 = 4648488^2 + 5788724^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×55117766234320² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55117766234327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344486038885 + ... + 344486039044.

It is an arithmetic number, because the mean of its divisors is an integer number (6407440324749).

Almost surely, 2^{55117766234320} is an apocalyptic number.

It is an amenable number.

55117766234320 is an abundant number, since it is smaller than the sum of its proper divisors (73031040260660).

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

55117766234320 is a wasteful number, since it uses less digits than its factorization.

55117766234320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688972077942 (or 688972077936 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 52.

The spelling of 55117766234320 in words is "fifty-five trillion, one hundred seventeen billion, seven hundred sixty-six million, two hundred thirty-four thousand, three hundred twenty".