55599713280 has 176 divisors, whose sum is σ = 197591833440. Its totient is φ = 14826553344.

The previous prime is 55599713269. The next prime is 55599713303. The reversal of 55599713280 is 8231799555.

55599713280 is a `hidden beast` number, since 5 + 559 + 9 + 7 + 1 + 3 + 2 + 80 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62859 + ... + 339338.

Almost surely, 2^55599713280 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 55599713280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98795916720).

55599713280 is an abundant number, since it is smaller than the sum of its proper divisors (141992120160).

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

55599713280 is a wasteful number, since it uses less digits than its factorization.

55599713280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402231 (or 402207 counting only the distinct ones).

The product of its (nonzero) digits is 3402000, while the sum is 54.

The spelling of 55599713280 in words is "fifty-five billion, five hundred ninety-nine million, seven hundred thirteen thousand, two hundred eighty".