76901578728 has 128 divisors (see below), whose sum is σ = 224970547200. Its totient is φ = 21693484800.

The previous prime is 76901578693. The next prime is 76901578729. The reversal of 76901578728 is 82787510967.

It is not an unprimeable number, because it can be changed into a prime (76901578729) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25468 + ... + 393003.

It is an arithmetic number, because the mean of its divisors is an integer number (1757582400).

Almost surely, 2^76901578728 is an apocalyptic number.

76901578728 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 76901578728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112485273600).

76901578728 is an abundant number, since it is smaller than the sum of its proper divisors (148068968472).

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

76901578728 is a wasteful number, since it uses less digits than its factorization.

76901578728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418543 (or 418539 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 60.

The spelling of 76901578728 in words is "seventy-six billion, nine hundred one million, five hundred seventy-eight thousand, seven hundred twenty-eight".