78790418087 has 2 divisors, whose sum is σ = 78790418088. Its totient is φ = 78790418086.

The previous prime is 78790418039. The next prime is 78790418099. The reversal of 78790418087 is 78081409787.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78790418087 - 2⁶ = 78790418023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78790418387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39395209043 + 39395209044.

It is an arithmetic number, because the mean of its divisors is an integer number (39395209044).

Almost surely, 2^78790418087 is an apocalyptic number.

78790418087 is a deficient number, since it is larger than the sum of its proper divisors (1).

78790418087 is an equidigital number, since it uses as much as digits as its factorization.

78790418087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6322176, while the sum is 59.

The spelling of 78790418087 in words is "seventy-eight billion, seven hundred ninety million, four hundred eighteen thousand, eighty-seven".