13086977381 has 4 divisors (see below), whose sum is σ = 13091152332. Its totient is φ = 13082802432.

The previous prime is 13086977363. The next prime is 13086977401. The reversal of 13086977381 is 18377968031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11830912900 + 1256064481 = 108770^2 + 35441^2 .

It is a cyclic number.

It is not a de Polignac number, because 13086977381 - 2²⁶ = 13019868517 is a prime.

It is a super-2 number, since 2×13086977381² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13086277381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2082770 + ... + 2089043.

It is an arithmetic number, because the mean of its divisors is an integer number (3272788083).

Almost surely, 2^13086977381 is an apocalyptic number.

It is an amenable number.

13086977381 is a deficient number, since it is larger than the sum of its proper divisors (4174951).

13086977381 is an equidigital number, since it uses as much as digits as its factorization.

13086977381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4174950.

The product of its (nonzero) digits is 1524096, while the sum is 53.

The spelling of 13086977381 in words is "thirteen billion, eighty-six million, nine hundred seventy-seven thousand, three hundred eighty-one".