520831243136 has 64 divisors (see below), whose sum is σ = 1041327534960. Its totient is φ = 259480166400.

The previous prime is 520831243103. The next prime is 520831243159. The reversal of 520831243136 is 631342138025.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×520831243136² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 520831243136.

It is a congruent number.

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, 42541976 + ... + 42554216.

Almost surely, 2^520831243136 is an apocalyptic number.

It is an amenable number.

520831243136 is a deficient number, since it is larger than the sum of its proper divisors (520496291824).

520831243136 is a wasteful number, since it uses less digits than its factorization.

520831243136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13423 (or 13411 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 520831243136 in words is "five hundred twenty billion, eight hundred thirty-one million, two hundred forty-three thousand, one hundred thirty-six".