13126169977 has 2 divisors, whose sum is σ = 13126169978. Its totient is φ = 13126169976.

The previous prime is 13126169957. The next prime is 13126169983. The reversal of 13126169977 is 77996162131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9581277456 + 3544892521 = 97884^2 + 59539^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13126169977 is a prime.

It is a super-3 number, since 3×13126169977³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (13126169957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6563084988 + 6563084989.

It is an arithmetic number, because the mean of its divisors is an integer number (6563084989).

Almost surely, 2^13126169977 is an apocalyptic number.

It is an amenable number.

13126169977 is a deficient number, since it is larger than the sum of its proper divisors (1).

13126169977 is an equidigital number, since it uses as much as digits as its factorization.

13126169977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 857304, while the sum is 52.

The spelling of 13126169977 in words is "thirteen billion, one hundred twenty-six million, one hundred sixty-nine thousand, nine hundred seventy-seven".