5131801829520 has 120 divisors (see below), whose sum is σ = 17235093742776. Its totient is φ = 1368417552384.

The previous prime is 5131801829507. The next prime is 5131801829599. The reversal of 5131801829520 is 259281081315.

5131801829520 is a `hidden beast` number, since 5 + 1 + 31 + 80 + 18 + 2 + 9 + 520 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1127512680336 + 4004289149184 = 1061844^2 + 2001072^2 .

It is a tau number, because it is divible by the number of its divisors (120).

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

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 23 ways as a sum of consecutive naturals, for example, 16708054 + ... + 17012426.

Almost surely, 2^{5131801829520} is an apocalyptic number.

It is an amenable number.

5131801829520 is an abundant number, since it is smaller than the sum of its proper divisors (12103291913256).

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

5131801829520 is a wasteful number, since it uses less digits than its factorization.

5131801829520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327809 (or 327800 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 45.

The spelling of 5131801829520 in words is "five trillion, one hundred thirty-one billion, eight hundred one million, eight hundred twenty-nine thousand, five hundred twenty".