55773394560 has 512 divisors, whose sum is σ = 219614976000. Its totient is φ = 13284311040.

The previous prime is 55773394463. The next prime is 55773394601. The reversal of 55773394560 is 6549337755.

55773394560 is a `hidden beast` number, since 5 + 5 + 7 + 73 + 3 + 9 + 4 + 560 = 666.

55773394560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55773394560² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 55773394497 and 55773394506.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6959836 + ... + 6967844.

It is an arithmetic number, because the mean of its divisors is an integer number (428935500).

Almost surely, 2^55773394560 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 55773394560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109807488000).

55773394560 is an abundant number, since it is smaller than the sum of its proper divisors (163841581440).

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

55773394560 is a wasteful number, since it uses less digits than its factorization.

55773394560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8081 (or 8063 counting only the distinct ones).

The product of its (nonzero) digits is 11907000, while the sum is 54.

The spelling of 55773394560 in words is "fifty-five billion, seven hundred seventy-three million, three hundred ninety-four thousand, five hundred sixty".