65977677956 has 6 divisors (see below), whose sum is σ = 115460936430. Its totient is φ = 32988838976.

The previous prime is 65977677833. The next prime is 65977677971.

65977677956 is nontrivially palindromic in base 10.

65977677956 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 65732755456 + 244922500 = 256384^2 + 15650^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8247209741 + ... + 8247209748.

It is an arithmetic number, because the mean of its divisors is an integer number (19243489405).

Almost surely, 2^65977677956 is an apocalyptic number.

It is an amenable number.

65977677956 is a deficient number, since it is larger than the sum of its proper divisors (49483258474).

65977677956 is a wasteful number, since it uses less digits than its factorization.

65977677956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16494419493 (or 16494419491 counting only the distinct ones).

The product of its digits is 1050197400, while the sum is 74.

The spelling of 65977677956 in words is "sixty-five billion, nine hundred seventy-seven million, six hundred seventy-seven thousand, nine hundred fifty-six".