13504989026 has 4 divisors (see below), whose sum is σ = 20257483542. Its totient is φ = 6752494512.

The previous prime is 13504988923. The next prime is 13504989031. The reversal of 13504989026 is 62098940531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62098940531 = 8093 ⋅7673167.

It can be written as a sum of positive squares in only one way, i.e., 13042782025 + 462207001 = 114205^2 + 21499^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3376247255 + ... + 3376247258.

Almost surely, 2^13504989026 is an apocalyptic number.

13504989026 is a deficient number, since it is larger than the sum of its proper divisors (6752494516).

13504989026 is an equidigital number, since it uses as much as digits as its factorization.

13504989026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6752494515.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 13504989026 in words is "thirteen billion, five hundred four million, nine hundred eighty-nine thousand, twenty-six".