52778255282640 has 120 divisors (see below), whose sum is σ = 187673266622088. Its totient is φ = 13246307205120.

The previous prime is 52778255282639. The next prime is 52778255282651. The reversal of 52778255282640 is 4628255287725.

52778255282640 is a `hidden beast` number, since 5 + 2 + 7 + 7 + 82 + 5 + 528 + 26 + 4 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 21620156463504 + 31158098819136 = 4649748^2 + 5581944^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2155962241 + ... + 2155986720.

Almost surely, 2^{52778255282640} is an apocalyptic number.

It is an amenable number.

52778255282640 is an abundant number, since it is smaller than the sum of its proper divisors (134895011339448).

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

52778255282640 is a wasteful number, since it uses less digits than its factorization.

52778255282640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4311948997 (or 4311948988 counting only the distinct ones).

The product of its (nonzero) digits is 150528000, while the sum is 63.

The spelling of 52778255282640 in words is "fifty-two trillion, seven hundred seventy-eight billion, two hundred fifty-five million, two hundred eighty-two thousand, six hundred forty".