13415423977 has 2 divisors, whose sum is σ = 13415423978. Its totient is φ = 13415423976.

The previous prime is 13415423951. The next prime is 13415424007. The reversal of 13415423977 is 77932451431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11064725721 + 2350698256 = 105189^2 + 48484^2 .

It is a cyclic number.

It is not a de Polignac number, because 13415423977 - 2⁷ = 13415423849 is a prime.

It is not a weakly prime, because it can be changed into another prime (13415429977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6707711988 + 6707711989.

It is an arithmetic number, because the mean of its divisors is an integer number (6707711989).

Almost surely, 2^13415423977 is an apocalyptic number.

It is an amenable number.

13415423977 is a deficient number, since it is larger than the sum of its proper divisors (1).

13415423977 is an equidigital number, since it uses as much as digits as its factorization.

13415423977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 46.

The spelling of 13415423977 in words is "thirteen billion, four hundred fifteen million, four hundred twenty-three thousand, nine hundred seventy-seven".