130815749779 has 48 divisors (see below), whose sum is σ = 158020927488. Its totient is φ = 108216108000.

The previous prime is 130815749773. The next prime is 130815749789. The reversal of 130815749779 is 977947518031.

It is not a de Polignac number, because 130815749779 - 2⁵ = 130815749747 is a prime.

It is a super-2 number, since 2×130815749779² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130815749773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15966574 + ... + 15974764.

It is an arithmetic number, because the mean of its divisors is an integer number (3292102656).

Almost surely, 2^130815749779 is an apocalyptic number.

130815749779 is a deficient number, since it is larger than the sum of its proper divisors (27205177709).

130815749779 is an equidigital number, since it uses as much as digits as its factorization.

130815749779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8321 (or 8286 counting only the distinct ones).

The product of its (nonzero) digits is 13335840, while the sum is 61.

The spelling of 130815749779 in words is "one hundred thirty billion, eight hundred fifteen million, seven hundred forty-nine thousand, seven hundred seventy-nine".