520845696964 has 12 divisors (see below), whose sum is σ = 911658762000. Its totient is φ = 260371764968.

The previous prime is 520845696949. The next prime is 520845696967. The reversal of 520845696964 is 469696548025.

It is a junction number, because it is equal to n+sod(n) for n = 520845696896 and 520845696905.

It is not an unprimeable number, because it can be changed into a prime (520845696967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12747934 + ... + 12788725.

It is an arithmetic number, because the mean of its divisors is an integer number (75971563500).

Almost surely, 2^520845696964 is an apocalyptic number.

It is an amenable number.

520845696964 is a deficient number, since it is larger than the sum of its proper divisors (390813065036).

520845696964 is a wasteful number, since it uses less digits than its factorization.

520845696964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25541762 (or 25541760 counting only the distinct ones).

The product of its (nonzero) digits is 111974400, while the sum is 64.

The spelling of 520845696964 in words is "five hundred twenty billion, eight hundred forty-five million, six hundred ninety-six thousand, nine hundred sixty-four".