965665637572 has 6 divisors (see below), whose sum is σ = 1689914865758. Its totient is φ = 482832818784.

The previous prime is 965665637543. The next prime is 965665637621. The reversal of 965665637572 is 275736566569.

It can be written as a sum of positive squares in only one way, i.e., 692916397056 + 272749240516 = 832416^2 + 522254^2 .

It is a junction number, because it is equal to n+sod(n) for n = 965665637498 and 965665637507.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120708204693 + ... + 120708204700.

Almost surely, 2^965665637572 is an apocalyptic number.

It is an amenable number.

965665637572 is a deficient number, since it is larger than the sum of its proper divisors (724249228186).

965665637572 is a wasteful number, since it uses less digits than its factorization.

965665637572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241416409397 (or 241416409395 counting only the distinct ones).

The product of its digits is 428652000, while the sum is 67.

The spelling of 965665637572 in words is "nine hundred sixty-five billion, six hundred sixty-five million, six hundred thirty-seven thousand, five hundred seventy-two".