78941081193 has 64 divisors (see below), whose sum is σ = 121598131200. Its totient is φ = 45145900800.

The previous prime is 78941081189. The next prime is 78941081201. The reversal of 78941081193 is 39118014987.

It is a happy number.

It is not a de Polignac number, because 78941081193 - 2² = 78941081189 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78941081113) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23912643 + ... + 23915943.

It is an arithmetic number, because the mean of its divisors is an integer number (1899970800).

Almost surely, 2^78941081193 is an apocalyptic number.

It is an amenable number.

78941081193 is a deficient number, since it is larger than the sum of its proper divisors (42657050007).

78941081193 is a wasteful number, since it uses less digits than its factorization.

78941081193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3942.

The product of its (nonzero) digits is 435456, while the sum is 51.

The spelling of 78941081193 in words is "seventy-eight billion, nine hundred forty-one million, eighty-one thousand, one hundred ninety-three".