64157111 has 2 divisors, whose sum is σ = 64157112. Its totient is φ = 64157110.

The previous prime is 64157101. The next prime is 64157113. The reversal of 64157111 is 11175146.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64157111 - 2¹⁰ = 64156087 is a prime.

It is a super-2 number, since 2×64157111² = 8232269783732642, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 64157113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64157113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32078555 + 32078556.

It is an arithmetic number, because the mean of its divisors is an integer number (32078556).

Almost surely, 2^64157111 is an apocalyptic number.

64157111 is a deficient number, since it is larger than the sum of its proper divisors (1).

64157111 is an equidigital number, since it uses as much as digits as its factorization.

64157111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 26.

The square root of 64157111 is about 8009.8134185510. The cubic root of 64157111 is about 400.3270471109.

The spelling of 64157111 in words is "sixty-four million, one hundred fifty-seven thousand, one hundred eleven".