78369327844 has 12 divisors (see below), whose sum is σ = 140335773424. Its totient is φ = 38273392584.

The previous prime is 78369327781. The next prime is 78369327857. The reversal of 78369327844 is 44872396387.

It is a happy number.

It is a super-2 number, since 2×78369327844² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227817642 + ... + 227817985.

Almost surely, 2^78369327844 is an apocalyptic number.

It is an amenable number.

78369327844 is a deficient number, since it is larger than the sum of its proper divisors (61966445580).

78369327844 is a wasteful number, since it uses less digits than its factorization.

78369327844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455635674 (or 455635672 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 61.

The spelling of 78369327844 in words is "seventy-eight billion, three hundred sixty-nine million, three hundred twenty-seven thousand, eight hundred forty-four".