55307065516920 has 512 divisors, whose sum is σ = 211618029772800. Its totient is φ = 12586197712896.

The previous prime is 55307065516891. The next prime is 55307065516939. The reversal of 55307065516920 is 2961556070355.

55307065516920 is a `hidden beast` number, since 5 + 5 + 3 + 0 + 7 + 0 + 6 + 551 + 69 + 20 = 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, 4754319424 + ... + 4754331056.

It is an arithmetic number, because the mean of its divisors is an integer number (413316464400).

Almost surely, 2^{55307065516920} 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 55307065516920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105809014886400).

55307065516920 is an abundant number, since it is smaller than the sum of its proper divisors (156310964255880).

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

55307065516920 is a wasteful number, since it uses less digits than its factorization.

55307065516920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14364 (or 14354 counting only the distinct ones).

The product of its (nonzero) digits is 8505000, while the sum is 54.

The spelling of 55307065516920 in words is "fifty-five trillion, three hundred seven billion, sixty-five million, five hundred sixteen thousand, nine hundred twenty".