78373752336 has 320 divisors, whose sum is σ = 254555136000. Its totient is φ = 22869342720.

The previous prime is 78373752323. The next prime is 78373752337. The reversal of 78373752336 is 63325737387.

78373752336 is a `hidden beast` number, since 7 + 8 + 37 + 375 + 233 + 6 = 666.

It is a super-2 number, since 2×78373752336² (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 not an unprimeable number, because it can be changed into a prime (78373752337) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 90815041 + ... + 90815903.

It is an arithmetic number, because the mean of its divisors is an integer number (795484800).

Almost surely, 2^78373752336 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 78373752336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127277568000).

78373752336 is an abundant number, since it is smaller than the sum of its proper divisors (176181383664).

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

78373752336 is a wasteful number, since it uses less digits than its factorization.

78373752336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579 (or 1567 counting only the distinct ones).

The product of its digits is 13335840, while the sum is 54.

The spelling of 78373752336 in words is "seventy-eight billion, three hundred seventy-three million, seven hundred fifty-two thousand, three hundred thirty-six".