55479520313280 has 896 divisors, whose sum is σ = 225654919987200. Its totient is φ = 12569224937472.

The previous prime is 55479520313267. The next prime is 55479520313297. The reversal of 55479520313280 is 8231302597455.

55479520313280 is a `hidden beast` number, since 5 + 5 + 4 + 7 + 9 + 520 + 3 + 1 + 32 + 80 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 9962202336 + ... + 9962207904.

Almost surely, 2^{55479520313280} 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 55479520313280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112827459993600).

55479520313280 is an abundant number, since it is smaller than the sum of its proper divisors (170175399673920).

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

55479520313280 is a wasteful number, since it uses less digits than its factorization.

55479520313280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7026 (or 7010 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 54.

The spelling of 55479520313280 in words is "fifty-five trillion, four hundred seventy-nine billion, five hundred twenty million, three hundred thirteen thousand, two hundred eighty".