78912226244 has 12 divisors (see below), whose sum is σ = 138122801964. Its totient is φ = 39448568544.

The previous prime is 78912226243. The next prime is 78912226259. The reversal of 78912226244 is 44262221987.

It can be written as a sum of positive squares in 2 ways, for example, as 28413147844 + 50499078400 = 168562^2 + 224720^2 .

It is not an unprimeable number, because it can be changed into a prime (78912226241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1862579 + ... + 1904474.

It is an arithmetic number, because the mean of its divisors is an integer number (11510233497).

Almost surely, 2^78912226244 is an apocalyptic number.

It is an amenable number.

78912226244 is a deficient number, since it is larger than the sum of its proper divisors (59210575720).

78912226244 is a wasteful number, since it uses less digits than its factorization.

78912226244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3772294 (or 3772292 counting only the distinct ones).

The product of its digits is 774144, while the sum is 47.

The spelling of 78912226244 in words is "seventy-eight billion, nine hundred twelve million, two hundred twenty-six thousand, two hundred forty-four".