13155111651 has 12 divisors (see below), whose sum is σ = 19279668296. Its totient is φ = 7972794720.

The previous prime is 13155111601. The next prime is 13155111653. The reversal of 13155111651 is 15611155131.

It is not a de Polignac number, because 13155111651 - 2⁷ = 13155111523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13155111653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18119626 + ... + 18120351.

Almost surely, 2^13155111651 is an apocalyptic number.

13155111651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13155111651 is a deficient number, since it is larger than the sum of its proper divisors (6124556645).

13155111651 is a wasteful number, since it uses less digits than its factorization.

13155111651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36240002 (or 36239991 counting only the distinct ones).

The product of its digits is 2250, while the sum is 30.

Adding to 13155111651 its reverse (15611155131), we get a palindrome (28766266782).

The spelling of 13155111651 in words is "thirteen billion, one hundred fifty-five million, one hundred eleven thousand, six hundred fifty-one".