76801872728 has 32 divisors (see below), whose sum is σ = 168589481760. Its totient is φ = 32112280320.

The previous prime is 76801872727. The next prime is 76801872739. The reversal of 76801872728 is 82727810867.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76801872727) 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, 16722851 + ... + 16727442.

It is an arithmetic number, because the mean of its divisors is an integer number (5268421305).

Almost surely, 2^76801872728 is an apocalyptic number.

It is an amenable number.

76801872728 is an abundant number, since it is smaller than the sum of its proper divisors (91787609032).

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

76801872728 is a wasteful number, since it uses less digits than its factorization.

76801872728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33450347 (or 33450343 counting only the distinct ones).

The product of its (nonzero) digits is 4214784, while the sum is 56.

The spelling of 76801872728 in words is "seventy-six billion, eight hundred one million, eight hundred seventy-two thousand, seven hundred twenty-eight".