54778715361792 has 80 divisors (see below), whose sum is σ = 162148801589280. Its totient is φ = 18259571782656.

The previous prime is 54778715361761. The next prime is 54778715361841. The reversal of 54778715361792 is 29716351787745.

54778715361792 is a `hidden beast` number, since 5 + 4 + 7 + 7 + 8 + 71 + 536 + 17 + 9 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 54778715361792.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1981276518 + ... + 1981304165.

It is an arithmetic number, because the mean of its divisors is an integer number (2026860019866).

Almost surely, 2^{54778715361792} is an apocalyptic number.

It is an amenable number.

54778715361792 is an abundant number, since it is smaller than the sum of its proper divisors (107370086227488).

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

54778715361792 is an equidigital number, since it uses as much as digits as its factorization.

54778715361792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3962580710 (or 3962580688 counting only the distinct ones).

The product of its digits is 622339200, while the sum is 72.

The spelling of 54778715361792 in words is "fifty-four trillion, seven hundred seventy-eight billion, seven hundred fifteen million, three hundred sixty-one thousand, seven hundred ninety-two".