78307322404 has 6 divisors (see below), whose sum is σ = 137037814214. Its totient is φ = 39153661200.

The previous prime is 78307322363. The next prime is 78307322407. The reversal of 78307322404 is 40422370387.

It can be written as a sum of positive squares in only one way, i.e., 60910240000 + 17397082404 = 246800^2 + 131898^2 .

It is a super-2 number, since 2×78307322404² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78307322407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9788415297 + ... + 9788415304.

Almost surely, 2^78307322404 is an apocalyptic number.

It is an amenable number.

78307322404 is a deficient number, since it is larger than the sum of its proper divisors (58730491810).

78307322404 is a wasteful number, since it uses less digits than its factorization.

78307322404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19576830605 (or 19576830603 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 40.

The spelling of 78307322404 in words is "seventy-eight billion, three hundred seven million, three hundred twenty-two thousand, four hundred four".