76801792064640 has 64 divisors (see below), whose sum is σ = 244805712212160. Its totient is φ = 20480477883392.

The previous prime is 76801792064603. The next prime is 76801792064671. The reversal of 76801792064640 is 4646029710867.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20000464764 + ... + 20000468603.

It is an arithmetic number, because the mean of its divisors is an integer number (3825089253315).

Almost surely, 2^{76801792064640} is an apocalyptic number.

It is an amenable number.

76801792064640 is an abundant number, since it is smaller than the sum of its proper divisors (168003920147520).

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

76801792064640 is a wasteful number, since it uses less digits than its factorization.

76801792064640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40000933389 (or 40000933377 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 60.

The spelling of 76801792064640 in words is "seventy-six trillion, eight hundred one billion, seven hundred ninety-two million, sixty-four thousand, six hundred forty".