78950296189 has 2 divisors, whose sum is σ = 78950296190. Its totient is φ = 78950296188.

The previous prime is 78950296151. The next prime is 78950296199. The reversal of 78950296189 is 98169205987.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51419190564 + 27531105625 = 226758^2 + 165925^2 .

It is a cyclic number.

It is not a de Polignac number, because 78950296189 - 2²³ = 78941907581 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78950296189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78950296199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39475148094 + 39475148095.

It is an arithmetic number, because the mean of its divisors is an integer number (39475148095).

Almost surely, 2^78950296189 is an apocalyptic number.

It is an amenable number.

78950296189 is a deficient number, since it is larger than the sum of its proper divisors (1).

78950296189 is an equidigital number, since it uses as much as digits as its factorization.

78950296189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19595520, while the sum is 64.

The spelling of 78950296189 in words is "seventy-eight billion, nine hundred fifty million, two hundred ninety-six thousand, one hundred eighty-nine".