55507757580 has 72 divisors (see below), whose sum is σ = 183680222544. Its totient is φ = 13456425600.

The previous prime is 55507757567. The next prime is 55507757581. The reversal of 55507757580 is 8575770555.

55507757580 is a `hidden beast` number, since 5 + 5 + 5 + 0 + 7 + 7 + 57 + 580 = 666.

It is a super-2 number, since 2×55507757580² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55507757581) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14015131 + ... + 14019090.

It is an arithmetic number, because the mean of its divisors is an integer number (2551114202).

Almost surely, 2^55507757580 is an apocalyptic number.

It is an amenable number.

55507757580 is an abundant number, since it is smaller than the sum of its proper divisors (128172464964).

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

55507757580 is a wasteful number, since it uses less digits than its factorization.

55507757580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28034247 (or 28034242 counting only the distinct ones).

The product of its (nonzero) digits is 8575000, while the sum is 54.

The spelling of 55507757580 in words is "fifty-five billion, five hundred seven million, seven hundred fifty-seven thousand, five hundred eighty".