55190737856 has 28 divisors (see below), whose sum is σ = 111061652400. Its totient is φ = 27206699520.

The previous prime is 55190737843. The next prime is 55190737859. The reversal of 55190737856 is 65873709155.

It is a super-2 number, since 2×55190737856² (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 (55190737859) 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, 6068381 + ... + 6077468.

Almost surely, 2^55190737856 is an apocalyptic number.

It is an amenable number.

55190737856 is an abundant number, since it is smaller than the sum of its proper divisors (55870914544).

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

55190737856 is a wasteful number, since it uses less digits than its factorization.

55190737856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12145932 (or 12145922 counting only the distinct ones).

The product of its (nonzero) digits is 7938000, while the sum is 56.

The spelling of 55190737856 in words is "fifty-five billion, one hundred ninety million, seven hundred thirty-seven thousand, eight hundred fifty-six".