78790999223 has 2 divisors, whose sum is σ = 78790999224. Its totient is φ = 78790999222.

The previous prime is 78790999207. The next prime is 78790999277. The reversal of 78790999223 is 32299909787.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78790999223 - 2⁴ = 78790999207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78790999223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78790999523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39395499611 + 39395499612.

It is an arithmetic number, because the mean of its divisors is an integer number (39395499612).

Almost surely, 2^78790999223 is an apocalyptic number.

78790999223 is a deficient number, since it is larger than the sum of its proper divisors (1).

78790999223 is an equidigital number, since it uses as much as digits as its factorization.

78790999223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30862944, while the sum is 65.

The spelling of 78790999223 in words is "seventy-eight billion, seven hundred ninety million, nine hundred ninety-nine thousand, two hundred twenty-three".