13079946538 has 16 divisors (see below), whose sum is σ = 19758886056. Its totient is φ = 6493763520.

The previous prime is 13079946487. The next prime is 13079946559. The reversal of 13079946538 is 83564997031.

It can be written as a sum of positive squares in 4 ways, for example, as 3222038169 + 9857908369 = 56763^2 + 99287^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208720 + ... + 264052.

Almost surely, 2^13079946538 is an apocalyptic number.

13079946538 is a deficient number, since it is larger than the sum of its proper divisors (6678939518).

13079946538 is a wasteful number, since it uses less digits than its factorization.

13079946538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56169.

The product of its (nonzero) digits is 4898880, while the sum is 55.

The spelling of 13079946538 in words is "thirteen billion, seventy-nine million, nine hundred forty-six thousand, five hundred thirty-eight".