13161977 has 2 divisors, whose sum is σ = 13161978. Its totient is φ = 13161976.

The previous prime is 13161971. The next prime is 13161983. The reversal of 13161977 is 77916131.

It is a balanced prime because it is at equal distance from previous prime (13161971) and next prime (13161983).

It can be written as a sum of positive squares in only one way, i.e., 10137856 + 3024121 = 3184^2 + 1739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13161977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13161971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6580988 + 6580989.

It is an arithmetic number, because the mean of its divisors is an integer number (6580989).

Almost surely, 2^13161977 is an apocalyptic number.

It is an amenable number.

13161977 is a deficient number, since it is larger than the sum of its proper divisors (1).

13161977 is an equidigital number, since it uses as much as digits as its factorization.

13161977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7938, while the sum is 35.

The square root of 13161977 is about 3627.9439080559. The cubic root of 13161977 is about 236.1060102591.

The spelling of 13161977 in words is "thirteen million, one hundred sixty-one thousand, nine hundred seventy-seven".