78379700159 has 2 divisors, whose sum is σ = 78379700160. Its totient is φ = 78379700158.

The previous prime is 78379700129. The next prime is 78379700213. The reversal of 78379700159 is 95100797387.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78379700159 - 2²⁰ = 78378651583 is a prime.

It is a super-2 number, since 2×78379700159² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78379700129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39189850079 + 39189850080.

It is an arithmetic number, because the mean of its divisors is an integer number (39189850080).

Almost surely, 2^78379700159 is an apocalyptic number.

78379700159 is a deficient number, since it is larger than the sum of its proper divisors (1).

78379700159 is an equidigital number, since it uses as much as digits as its factorization.

78379700159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3333960, while the sum is 56.

The spelling of 78379700159 in words is "seventy-eight billion, three hundred seventy-nine million, seven hundred thousand, one hundred fifty-nine".