13980633971 has 2 divisors, whose sum is σ = 13980633972. Its totient is φ = 13980633970.

The previous prime is 13980633913. The next prime is 13980634027. The reversal of 13980633971 is 17933608931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13980633971 is a prime.

It is not a weakly prime, because it can be changed into another prime (13980623971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6990316985 + 6990316986.

It is an arithmetic number, because the mean of its divisors is an integer number (6990316986).

Almost surely, 2^13980633971 is an apocalyptic number.

13980633971 is a deficient number, since it is larger than the sum of its proper divisors (1).

13980633971 is an equidigital number, since it uses as much as digits as its factorization.

13980633971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 734832, while the sum is 50.

The spelling of 13980633971 in words is "thirteen billion, nine hundred eighty million, six hundred thirty-three thousand, nine hundred seventy-one".