13761857971 has 2 divisors, whose sum is σ = 13761857972. Its totient is φ = 13761857970.

The previous prime is 13761857957. The next prime is 13761858013. The reversal of 13761857971 is 17975816731.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13761857971 is a prime.

It is not a weakly prime, because it can be changed into another prime (13761857771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6880928985 + 6880928986.

It is an arithmetic number, because the mean of its divisors is an integer number (6880928986).

Almost surely, 2^13761857971 is an apocalyptic number.

13761857971 is a deficient number, since it is larger than the sum of its proper divisors (1).

13761857971 is an equidigital number, since it uses as much as digits as its factorization.

13761857971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2222640, while the sum is 55.

The spelling of 13761857971 in words is "thirteen billion, seven hundred sixty-one million, eight hundred fifty-seven thousand, nine hundred seventy-one".