13971366667 has 2 divisors, whose sum is σ = 13971366668. Its totient is φ = 13971366666.

The previous prime is 13971366659. The next prime is 13971366709. The reversal of 13971366667 is 76666317931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13971366667 - 2³ = 13971366659 is a prime.

It is not a weakly prime, because it can be changed into another prime (13971366067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6985683333 + 6985683334.

It is an arithmetic number, because the mean of its divisors is an integer number (6985683334).

Almost surely, 2^13971366667 is an apocalyptic number.

13971366667 is a deficient number, since it is larger than the sum of its proper divisors (1).

13971366667 is an equidigital number, since it uses as much as digits as its factorization.

13971366667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5143824, while the sum is 55.

The spelling of 13971366667 in words is "thirteen billion, nine hundred seventy-one million, three hundred sixty-six thousand, six hundred sixty-seven".