78147766080 has 672 divisors, whose sum is σ = 304920944640. Its totient is φ = 18265927680.

The previous prime is 78147766051. The next prime is 78147766117. The reversal of 78147766080 is 8066774187.

It is a super-2 number, since 2×78147766080² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 39014359 + ... + 39016361.

Almost surely, 2^78147766080 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 78147766080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152460472320).

78147766080 is an abundant number, since it is smaller than the sum of its proper divisors (226773178560).

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

78147766080 is a wasteful number, since it uses less digits than its factorization.

78147766080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2099 (or 2086 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The spelling of 78147766080 in words is "seventy-eight billion, one hundred forty-seven million, seven hundred sixty-six thousand, eighty".