13861632977 has 2 divisors, whose sum is σ = 13861632978. Its totient is φ = 13861632976.

The previous prime is 13861632931. The next prime is 13861632979. The reversal of 13861632977 is 77923616831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11634642496 + 2226990481 = 107864^2 + 47191^2 .

It is a cyclic number.

It is not a de Polignac number, because 13861632977 - 2³² = 9566665681 is a prime.

Together with 13861632979, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13861632979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6930816488 + 6930816489.

It is an arithmetic number, because the mean of its divisors is an integer number (6930816489).

Almost surely, 2^13861632977 is an apocalyptic number.

It is an amenable number.

13861632977 is a deficient number, since it is larger than the sum of its proper divisors (1).

13861632977 is an equidigital number, since it uses as much as digits as its factorization.

13861632977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 53.

The spelling of 13861632977 in words is "thirteen billion, eight hundred sixty-one million, six hundred thirty-two thousand, nine hundred seventy-seven".