78231536496 has 240 divisors, whose sum is σ = 247804764480. Its totient is φ = 22902865920.

The previous prime is 78231536489. The next prime is 78231536521. The reversal of 78231536496 is 69463513287.

78231536496 is a `hidden beast` number, since 78 + 2 + 31 + 53 + 6 + 496 = 666.

It is a super-2 number, since 2×78231536496² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2291520 + ... + 2325408.

It is an arithmetic number, because the mean of its divisors is an integer number (1032519852).

Almost surely, 2^78231536496 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 78231536496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123902382240).

78231536496 is an abundant number, since it is smaller than the sum of its proper divisors (169573227984).

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

78231536496 is a wasteful number, since it uses less digits than its factorization.

78231536496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33984 (or 33975 counting only the distinct ones).

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

The spelling of 78231536496 in words is "seventy-eight billion, two hundred thirty-one million, five hundred thirty-six thousand, four hundred ninety-six".