55905977088 has 720 divisors, whose sum is σ = 191464390656. Its totient is φ = 16094453760.

The previous prime is 55905977051. The next prime is 55905977089. The reversal of 55905977088 is 88077950955.

55905977088 is a `hidden beast` number, since 559 + 0 + 5 + 9 + 7 + 70 + 8 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55905977089) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 440204481 + ... + 440204607.

Almost surely, 2^55905977088 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 55905977088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95732195328).

55905977088 is an abundant number, since it is smaller than the sum of its proper divisors (135558413568).

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

55905977088 is a wasteful number, since it uses less digits than its factorization.

55905977088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 31752000, while the sum is 63.

The spelling of 55905977088 in words is "fifty-five billion, nine hundred five million, nine hundred seventy-seven thousand, eighty-eight".