520402554945 has 192 divisors, whose sum is σ = 1192481472000. Its totient is φ = 208039104000.

The previous prime is 520402554937. The next prime is 520402554977. The reversal of 520402554945 is 549455204025.

520402554945 is a `hidden beast` number, since 5 + 2 + 0 + 4 + 0 + 2 + 554 + 94 + 5 = 666.

It is not a de Polignac number, because 520402554945 - 2³ = 520402554937 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 520402554945.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 3744195 + ... + 3880695.

It is an arithmetic number, because the mean of its divisors is an integer number (6210841000).

Almost surely, 2^520402554945 is an apocalyptic number.

It is an amenable number.

520402554945 is an abundant number, since it is smaller than the sum of its proper divisors (672078917055).

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

520402554945 is a wasteful number, since it uses less digits than its factorization.

520402554945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136565 (or 136548 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 45.

The spelling of 520402554945 in words is "five hundred twenty billion, four hundred two million, five hundred fifty-four thousand, nine hundred forty-five".