13021890515 has 16 divisors (see below), whose sum is σ = 15887304576. Its totient is φ = 10243593600.

The previous prime is 13021890487. The next prime is 13021890551. The reversal of 13021890515 is 51509812031.

It is not a de Polignac number, because 13021890515 - 2⁶ = 13021890451 is a prime.

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, 1893974 + ... + 1900836.

It is an arithmetic number, because the mean of its divisors is an integer number (992956536).

Almost surely, 2^13021890515 is an apocalyptic number.

13021890515 is a deficient number, since it is larger than the sum of its proper divisors (2865414061).

13021890515 is an equidigital number, since it uses as much as digits as its factorization.

13021890515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13150.

The product of its (nonzero) digits is 10800, while the sum is 35.

The spelling of 13021890515 in words is "thirteen billion, twenty-one million, eight hundred ninety thousand, five hundred fifteen".