76806881280 has 456 divisors, whose sum is σ = 282661996032. Its totient is φ = 19226689536.

The previous prime is 76806881279. The next prime is 76806881287. The reversal of 76806881280 is 8218860867.

It is not an unprimeable number, because it can be changed into a prime (76806881287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200539969 + ... + 200540351.

Almost surely, 2^76806881280 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 76806881280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141330998016).

76806881280 is an abundant number, since it is smaller than the sum of its proper divisors (205855114752).

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

76806881280 is an equidigital number, since it uses as much as digits as its factorization.

76806881280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 410 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 54.

The spelling of 76806881280 in words is "seventy-six billion, eight hundred six million, eight hundred eighty-one thousand, two hundred eighty".