13516872458 has 4 divisors (see below), whose sum is σ = 20275308690. Its totient is φ = 6758436228.

The previous prime is 13516872407. The next prime is 13516872487. The reversal of 13516872458 is 85427861531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85427861531 = 20773 ⋅4112447.

It can be written as a sum of positive squares in only one way, i.e., 10156003729 + 3360868729 = 100777^2 + 57973^2 .

It is a super-3 number, since 3×13516872458³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3379218113 + ... + 3379218116.

Almost surely, 2^13516872458 is an apocalyptic number.

13516872458 is a deficient number, since it is larger than the sum of its proper divisors (6758436232).

13516872458 is an equidigital number, since it uses as much as digits as its factorization.

13516872458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6758436231.

The product of its digits is 1612800, while the sum is 50.

The spelling of 13516872458 in words is "thirteen billion, five hundred sixteen million, eight hundred seventy-two thousand, four hundred fifty-eight".