521831183811048 has 96 divisors (see below), whose sum is σ = 1413626521437000. Its totient is φ = 173902657204224.

The previous prime is 521831183811043. The next prime is 521831183811089. The reversal of 521831183811048 is 840118381138125.

521831183811048 is a `hidden beast` number, since 5 + 21 + 83 + 118 + 381 + 10 + 48 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 401828404652964 + 120002779158084 = 20045658^2 + 10954578^2 .

It is a junction number, because it is equal to n+sod(n) for n = 521831183810985 and 521831183811003.

It is not an unprimeable number, because it can be changed into a prime (521831183811043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9857562436 + ... + 9857615372.

Almost surely, 2^{521831183811048} is an apocalyptic number.

It is an amenable number.

521831183811048 is an abundant number, since it is smaller than the sum of its proper divisors (891795337625952).

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

521831183811048 is a wasteful number, since it uses less digits than its factorization.

521831183811048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82691 (or 82684 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 54.

The spelling of 521831183811048 in words is "five hundred twenty-one trillion, eight hundred thirty-one billion, one hundred eighty-three million, eight hundred eleven thousand, forty-eight".