78231453696 has 600 divisors, whose sum is σ = 267196273344. Its totient is φ = 22578462720.

The previous prime is 78231453653. The next prime is 78231453701. The reversal of 78231453696 is 69635413287.

78231453696 is a `hidden beast` number, since 7 + 8 + 2 + 3 + 14 + 536 + 96 = 666.

It is a super-2 number, since 2×78231453696² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 335757196 + ... + 335757428.

Almost surely, 2^78231453696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78231453696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133598136672).

78231453696 is an abundant number, since it is smaller than the sum of its proper divisors (188964819648).

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

78231453696 is a wasteful number, since it uses less digits than its factorization.

78231453696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 272 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The spelling of 78231453696 in words is "seventy-eight billion, two hundred thirty-one million, four hundred fifty-three thousand, six hundred ninety-six".