5131536816 has 80 divisors (see below), whose sum is σ = 15291949824. Its totient is φ = 1452440832.

The previous prime is 5131536799. The next prime is 5131536821. The reversal of 5131536816 is 6186351315.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35415 + ... + 107318.

Almost surely, 2^5131536816 is an apocalyptic number.

5131536816 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

5131536816 is an abundant number, since it is smaller than the sum of its proper divisors (10160413008).

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

5131536816 is a wasteful number, since it uses less digits than its factorization.

5131536816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142858 (or 142852 counting only the distinct ones).

The product of its digits is 64800, while the sum is 39.

The square root of 5131536816 is about 71634.7458709808. The cubic root of 5131536816 is about 1724.8413286525.

The spelling of 5131536816 in words is "five billion, one hundred thirty-one million, five hundred thirty-six thousand, eight hundred sixteen".