65720082776 has 16 divisors (see below), whose sum is σ = 123384578400. Its totient is φ = 32817528544.

The previous prime is 65720082709. The next prime is 65720082793. The reversal of 65720082776 is 67728002756.

65720082776 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5307536 + ... + 5319903.

It is an arithmetic number, because the mean of its divisors is an integer number (7711536150).

Almost surely, 2^65720082776 is an apocalyptic number.

It is an amenable number.

65720082776 is a deficient number, since it is larger than the sum of its proper divisors (57664495624).

65720082776 is a wasteful number, since it uses less digits than its factorization.

65720082776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10628218 (or 10628214 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 50.

The spelling of 65720082776 in words is "sixty-five billion, seven hundred twenty million, eighty-two thousand, seven hundred seventy-six".