76642863072 has 24 divisors (see below), whose sum is σ = 201187515816. Its totient is φ = 25547620992.

The previous prime is 76642863071. The next prime is 76642863079. The reversal of 76642863072 is 27036824667.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76642863071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399181483 + ... + 399181674.

It is an arithmetic number, because the mean of its divisors is an integer number (8382813159).

Almost surely, 2^76642863072 is an apocalyptic number.

It is an amenable number.

76642863072 is an abundant number, since it is smaller than the sum of its proper divisors (124544652744).

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

76642863072 is a wasteful number, since it uses less digits than its factorization.

76642863072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798363170 (or 798363162 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 51.

The spelling of 76642863072 in words is "seventy-six billion, six hundred forty-two million, eight hundred sixty-three thousand, seventy-two".