55655172011520 has 240 divisors, whose sum is σ = 194620876493472. Its totient is φ = 14697287516160.

The previous prime is 55655172011489. The next prime is 55655172011573. The reversal of 55655172011520 is 2511027155655.

55655172011520 is a `hidden beast` number, since 5 + 5 + 6 + 5 + 51 + 72 + 0 + 1 + 1 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9353041 + ... + 14099280.

Almost surely, 2^{55655172011520} is an apocalyptic number.

It is an amenable number.

55655172011520 is an abundant number, since it is smaller than the sum of its proper divisors (138965704481952).

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

55655172011520 is a wasteful number, since it uses less digits than its factorization.

55655172011520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23452453 (or 23452434 counting only the distinct ones).

The product of its (nonzero) digits is 525000, while the sum is 45.

The spelling of 55655172011520 in words is "fifty-five trillion, six hundred fifty-five billion, one hundred seventy-two million, eleven thousand, five hundred twenty".