65776320740 has 48 divisors (see below), whose sum is σ = 151194333360. Its totient is φ = 23888494080.

The previous prime is 65776320677. The next prime is 65776320773. The reversal of 65776320740 is 4702367756.

It can be written as a sum of positive squares in 8 ways, for example, as 2963931364 + 62812389376 = 54442^2 + 250624^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2057795 + ... + 2089514.

It is an arithmetic number, because the mean of its divisors is an integer number (3149881945).

Almost surely, 2^65776320740 is an apocalyptic number.

It is an amenable number.

65776320740 is an abundant number, since it is smaller than the sum of its proper divisors (85418012620).

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

65776320740 is a wasteful number, since it uses less digits than its factorization.

65776320740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4147392 (or 4147390 counting only the distinct ones).

The product of its (nonzero) digits is 1481760, while the sum is 47.

The spelling of 65776320740 in words is "sixty-five billion, seven hundred seventy-six million, three hundred twenty thousand, seven hundred forty".