55139327147520 has 1600 divisors, whose sum is σ = 246537709862400. Its totient is φ = 11442901155840.

The previous prime is 55139327147483. The next prime is 55139327147579. The reversal of 55139327147520 is 2574172393155.

55139327147520 is a `hidden beast` number, since 5 + 5 + 1 + 3 + 9 + 3 + 2 + 71 + 47 + 520 = 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 159 ways as a sum of consecutive naturals, for example, 16270085986 + ... + 16270089374.

It is an arithmetic number, because the mean of its divisors is an integer number (154086068664).

Almost surely, 2^{55139327147520} 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 55139327147520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123268854931200).

55139327147520 is an abundant number, since it is smaller than the sum of its proper divisors (191398382714880).

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

55139327147520 is a wasteful number, since it uses less digits than its factorization.

55139327147520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4461 (or 4436 counting only the distinct ones).

The product of its (nonzero) digits is 7938000, while the sum is 54.

The spelling of 55139327147520 in words is "fifty-five trillion, one hundred thirty-nine billion, three hundred twenty-seven million, one hundred forty-seven thousand, five hundred twenty".