13156868677 has 4 divisors (see below), whose sum is σ = 13157237376. Its totient is φ = 13156499980.

The previous prime is 13156868663. The next prime is 13156868693. The reversal of 13156868677 is 77686865131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77686865131 = 1153 ⋅67378027.

It is a cyclic number.

It is not a de Polignac number, because 13156868677 - 2¹¹ = 13156866629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13156878677) 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, 124303 + ... + 204364.

It is an arithmetic number, because the mean of its divisors is an integer number (3289309344).

Almost surely, 2^13156868677 is an apocalyptic number.

It is an amenable number.

13156868677 is a deficient number, since it is larger than the sum of its proper divisors (368699).

13156868677 is an equidigital number, since it uses as much as digits as its factorization.

13156868677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368698.

The product of its digits is 10160640, while the sum is 58.

The spelling of 13156868677 in words is "thirteen billion, one hundred fifty-six million, eight hundred sixty-eight thousand, six hundred seventy-seven".