55791952890 has 32 divisors (see below), whose sum is σ = 134265565440. Its totient is φ = 14837312064.

The previous prime is 55791952837. The next prime is 55791952907. The reversal of 55791952890 is 9825919755.

It is a super-2 number, since 2×55791952890² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2522685 + ... + 2544704.

It is an arithmetic number, because the mean of its divisors is an integer number (4195798920).

Almost surely, 2^55791952890 is an apocalyptic number.

55791952890 is an abundant number, since it is smaller than the sum of its proper divisors (78473612550).

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

55791952890 is a wasteful number, since it uses less digits than its factorization.

55791952890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5067766.

The product of its (nonzero) digits is 10206000, while the sum is 60.

The spelling of 55791952890 in words is "fifty-five billion, seven hundred ninety-one million, nine hundred fifty-two thousand, eight hundred ninety".