13139863451 has 16 divisors (see below), whose sum is σ = 15494051328. Its totient is φ = 10985738400.

The previous prime is 13139863433. The next prime is 13139863483. The reversal of 13139863451 is 15436893131.

It is a de Polignac number, because none of the positive numbers 2^k-13139863451 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13139863411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130781 + ... + 208286.

It is an arithmetic number, because the mean of its divisors is an integer number (968378208).

Almost surely, 2^13139863451 is an apocalyptic number.

13139863451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13139863451 is a deficient number, since it is larger than the sum of its proper divisors (2354187877).

13139863451 is a wasteful number, since it uses less digits than its factorization.

13139863451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339362.

The product of its digits is 233280, while the sum is 44.

The spelling of 13139863451 in words is "thirteen billion, one hundred thirty-nine million, eight hundred sixty-three thousand, four hundred fifty-one".