78930414377 has 2 divisors, whose sum is σ = 78930414378. Its totient is φ = 78930414376.

The previous prime is 78930414361. The next prime is 78930414379. The reversal of 78930414377 is 77341403987.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41574802201 + 37355612176 = 203899^2 + 193276^2 .

It is a cyclic number.

It is not a de Polignac number, because 78930414377 - 2⁴ = 78930414361 is a prime.

Together with 78930414379, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (78930414379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39465207188 + 39465207189.

It is an arithmetic number, because the mean of its divisors is an integer number (39465207189).

Almost surely, 2^78930414377 is an apocalyptic number.

It is an amenable number.

78930414377 is a deficient number, since it is larger than the sum of its proper divisors (1).

78930414377 is an equidigital number, since it uses as much as digits as its factorization.

78930414377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3556224, while the sum is 53.

The spelling of 78930414377 in words is "seventy-eight billion, nine hundred thirty million, four hundred fourteen thousand, three hundred seventy-seven".