78361238264 has 16 divisors (see below), whose sum is σ = 147104568600. Its totient is φ = 39133353312.

The previous prime is 78361238209. The next prime is 78361238269. The reversal of 78361238264 is 46283216387.

It is a super-2 number, since 2×78361238264² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78361238269) 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, 5901182 + ... + 5914445.

Almost surely, 2^78361238264 is an apocalyptic number.

It is an amenable number.

78361238264 is a deficient number, since it is larger than the sum of its proper divisors (68743330336).

78361238264 is a wasteful number, since it uses less digits than its factorization.

78361238264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11816462 (or 11816458 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 50.

The spelling of 78361238264 in words is "seventy-eight billion, three hundred sixty-one million, two hundred thirty-eight thousand, two hundred sixty-four".