520444664352 has 36 divisors (see below), whose sum is σ = 1480014515070. Its totient is φ = 173481554688.

The previous prime is 520444664347. The next prime is 520444664387. The reversal of 520444664352 is 253466444025.

It is a happy number.

520444664352 is a `hidden beast` number, since 5 + 204 + 4 + 4 + 6 + 6 + 435 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 345222053136 + 175222611216 = 587556^2 + 418596^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 520444664298 and 520444664307.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 903549477 + ... + 903550052.

Almost surely, 2^520444664352 is an apocalyptic number.

It is an amenable number.

520444664352 is an abundant number, since it is smaller than the sum of its proper divisors (959569850718).

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

520444664352 is a wasteful number, since it uses less digits than its factorization.

520444664352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807099545 (or 1807099534 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 45.

The spelling of 520444664352 in words is "five hundred twenty billion, four hundred forty-four million, six hundred sixty-four thousand, three hundred fifty-two".