55255868398368 has 576 divisors, whose sum is σ = 187638156961920. Its totient is φ = 15753222144000.

The previous prime is 55255868398361. The next prime is 55255868398387. The reversal of 55255868398368 is 86389386855255.

55255868398368 is a `hidden beast` number, since 5 + 5 + 25 + 586 + 8 + 3 + 9 + 8 + 3 + 6 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (55255868398361) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6897495483 + ... + 6897503493.

It is an arithmetic number, because the mean of its divisors is an integer number (325760689170).

Almost surely, 2^{55255868398368} 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 55255868398368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93819078480960).

55255868398368 is an abundant number, since it is smaller than the sum of its proper divisors (132382288563552).

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

55255868398368 is a wasteful number, since it uses less digits than its factorization.

55255868398368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11950 (or 11925 counting only the distinct ones).

The product of its digits is 14929920000, while the sum is 81.

The spelling of 55255868398368 in words is "fifty-five trillion, two hundred fifty-five billion, eight hundred sixty-eight million, three hundred ninety-eight thousand, three hundred sixty-eight".