13077155491 has 2 divisors, whose sum is σ = 13077155492. Its totient is φ = 13077155490.

The previous prime is 13077155489. The next prime is 13077155521. The reversal of 13077155491 is 19455177031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13077155491 - 2¹ = 13077155489 is a prime.

Together with 13077155489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13077155401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6538577745 + 6538577746.

It is an arithmetic number, because the mean of its divisors is an integer number (6538577746).

Almost surely, 2^13077155491 is an apocalyptic number.

13077155491 is a deficient number, since it is larger than the sum of its proper divisors (1).

13077155491 is an equidigital number, since it uses as much as digits as its factorization.

13077155491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 132300, while the sum is 43.

The spelling of 13077155491 in words is "thirteen billion, seventy-seven million, one hundred fifty-five thousand, four hundred ninety-one".