78329623320 has 128 divisors (see below), whose sum is σ = 281183313600. Its totient is φ = 19281134592.

The previous prime is 78329623279. The next prime is 78329623349. The reversal of 78329623320 is 2332692387.

78329623320 is a `hidden beast` number, since 78 + 329 + 6 + 233 + 20 = 666.

It is a super-2 number, since 2×78329623320² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2775477 + ... + 2803556.

Almost surely, 2^78329623320 is an apocalyptic number.

It is an amenable number.

78329623320 is an abundant number, since it is smaller than the sum of its proper divisors (202853690280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78329623320 is a wasteful number, since it uses less digits than its factorization.

78329623320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5579066 (or 5579056 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 78329623320 in words is "seventy-eight billion, three hundred twenty-nine million, six hundred twenty-three thousand, three hundred twenty".