78307322405 has 16 divisors (see below), whose sum is σ = 101224335744. Its totient is φ = 57811414080.

The previous prime is 78307322363. The next prime is 78307322407. The reversal of 78307322405 is 50422370387.

It is a de Polignac number, because none of the positive numbers 2^k-78307322405 is a prime.

It is a super-2 number, since 2×78307322405² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84950 + ... + 404760.

It is an arithmetic number, because the mean of its divisors is an integer number (6326520984).

Almost surely, 2^78307322405 is an apocalyptic number.

It is an amenable number.

78307322405 is a deficient number, since it is larger than the sum of its proper divisors (22917013339).

78307322405 is a wasteful number, since it uses less digits than its factorization.

78307322405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323596.

The product of its (nonzero) digits is 282240, while the sum is 41.

The spelling of 78307322405 in words is "seventy-eight billion, three hundred seven million, three hundred twenty-two thousand, four hundred five".