55766173307904 has 528 divisors, whose sum is σ = 172093481763840. Its totient is φ = 17354244096000.

The previous prime is 55766173307899. The next prime is 55766173307939. The reversal of 55766173307904 is 40970337166755.

55766173307904 is a `hidden beast` number, since 5 + 5 + 7 + 6 + 617 + 3 + 3 + 0 + 7 + 9 + 0 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14258799709 + ... + 14258803619.

Almost surely, 2^{55766173307904} 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 55766173307904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86046740881920).

55766173307904 is an abundant number, since it is smaller than the sum of its proper divisors (116327308455936).

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

55766173307904 is a wasteful number, since it uses less digits than its factorization.

55766173307904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5718 (or 5697 counting only the distinct ones).

The product of its (nonzero) digits is 100018800, while the sum is 63.

The spelling of 55766173307904 in words is "fifty-five trillion, seven hundred sixty-six billion, one hundred seventy-three million, three hundred seven thousand, nine hundred four".