78376274688 has 72 divisors (see below), whose sum is σ = 208743091200. Its totient is φ = 26106901504.

The previous prime is 78376274651. The next prime is 78376274689. The reversal of 78376274688 is 88647267387.

It is a happy number.

It is a super-2 number, since 2×78376274688² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78376274689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1069693 + ... + 1140611.

It is an arithmetic number, because the mean of its divisors is an integer number (2899209600).

Almost surely, 2^78376274688 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 78376274688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104371545600).

78376274688 is an abundant number, since it is smaller than the sum of its proper divisors (130366816512).

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

78376274688 is a wasteful number, since it uses less digits than its factorization.

78376274688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72377 (or 72363 counting only the distinct ones).

The product of its digits is 151732224, while the sum is 66.

The spelling of 78376274688 in words is "seventy-eight billion, three hundred seventy-six million, two hundred seventy-four thousand, six hundred eighty-eight".