13111535977 has 2 divisors, whose sum is σ = 13111535978. Its totient is φ = 13111535976.

The previous prime is 13111535971. The next prime is 13111536029. The reversal of 13111535977 is 77953511131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11362707216 + 1748828761 = 106596^2 + 41819^2 .

It is an emirp because it is prime and its reverse (77953511131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13111535977 is a prime.

It is not a weakly prime, because it can be changed into another prime (13111535971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6555767988 + 6555767989.

It is an arithmetic number, because the mean of its divisors is an integer number (6555767989).

Almost surely, 2^13111535977 is an apocalyptic number.

It is an amenable number.

13111535977 is a deficient number, since it is larger than the sum of its proper divisors (1).

13111535977 is an equidigital number, since it uses as much as digits as its factorization.

13111535977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 99225, while the sum is 43.

The spelling of 13111535977 in words is "thirteen billion, one hundred eleven million, five hundred thirty-five thousand, nine hundred seventy-seven".