78674387059 has 2 divisors, whose sum is σ = 78674387060. Its totient is φ = 78674387058.

The previous prime is 78674386993. The next prime is 78674387191. The reversal of 78674387059 is 95078347687.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78674387059 - 2²³ = 78665998451 is a prime.

It is not a weakly prime, because it can be changed into another prime (78674337059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39337193529 + 39337193530.

It is an arithmetic number, because the mean of its divisors is an integer number (39337193530).

Almost surely, 2^78674387059 is an apocalyptic number.

78674387059 is a deficient number, since it is larger than the sum of its proper divisors (1).

78674387059 is an equidigital number, since it uses as much as digits as its factorization.

78674387059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71124480, while the sum is 64.

The spelling of 78674387059 in words is "seventy-eight billion, six hundred seventy-four million, three hundred eighty-seven thousand, fifty-nine".