78715127 has 2 divisors, whose sum is σ = 78715128. Its totient is φ = 78715126.

The previous prime is 78715103. The next prime is 78715129. The reversal of 78715127 is 72151787.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78715127 - 2¹⁶ = 78649591 is a prime.

It is a super-2 number, since 2×78715127² = 12392142437252258, which contains 22 as substring.

Together with 78715129, 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 (78715129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39357563 + 39357564.

It is an arithmetic number, because the mean of its divisors is an integer number (39357564).

Almost surely, 2^78715127 is an apocalyptic number.

78715127 is a deficient number, since it is larger than the sum of its proper divisors (1).

78715127 is an equidigital number, since it uses as much as digits as its factorization.

78715127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27440, while the sum is 38.

The square root of 78715127 is about 8872.1545861194. The cubic root of 78715127 is about 428.5676643109.

The spelling of 78715127 in words is "seventy-eight million, seven hundred fifteen thousand, one hundred twenty-seven".