78716157 has 16 divisors (see below), whose sum is σ = 113187648. Its totient is φ = 48372480.

The previous prime is 78716147. The next prime is 78716159. The reversal of 78716157 is 75161787.

It is not a de Polignac number, because 78716157 - 2⁶ = 78716093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78716159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52338 + ... + 53820.

It is an arithmetic number, because the mean of its divisors is an integer number (7074228).

Almost surely, 2^78716157 is an apocalyptic number.

It is an amenable number.

78716157 is a deficient number, since it is larger than the sum of its proper divisors (34471491).

78716157 is a wasteful number, since it uses less digits than its factorization.

78716157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2860.

The product of its digits is 82320, while the sum is 42.

The square root of 78716157 is about 8872.2126327089. The cubic root of 78716157 is about 428.5695335948.

It can be divided in two parts, 7871 and 6157, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 78716157 in words is "seventy-eight million, seven hundred sixteen thousand, one hundred fifty-seven".