13311129977 has 2 divisors, whose sum is σ = 13311129978. Its totient is φ = 13311129976.

The previous prime is 13311129961. The next prime is 13311129983. The reversal of 13311129977 is 77992111331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8491438201 + 4819691776 = 92149^2 + 69424^2 .

It is a cyclic number.

It is not a de Polignac number, because 13311129977 - 2⁴ = 13311129961 is a prime.

It is not a weakly prime, because it can be changed into another prime (13311129077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6655564988 + 6655564989.

It is an arithmetic number, because the mean of its divisors is an integer number (6655564989).

Almost surely, 2^13311129977 is an apocalyptic number.

It is an amenable number.

13311129977 is a deficient number, since it is larger than the sum of its proper divisors (1).

13311129977 is an equidigital number, since it uses as much as digits as its factorization.

13311129977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 71442, while the sum is 44.

The spelling of 13311129977 in words is "thirteen billion, three hundred eleven million, one hundred twenty-nine thousand, nine hundred seventy-seven".