65605550000656 has 10 divisors (see below), whose sum is σ = 127110753126302. Its totient is φ = 32802775000320.

The previous prime is 65605550000603. The next prime is 65605550000671. The reversal of 65605550000656 is 65600005550656.

It can be written as a sum of positive squares in only one way, i.e., 38351762694400 + 27253787306256 = 6192880^2 + 5220516^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2050173437505 + ... + 2050173437536.

Almost surely, 2^{65605550000656} is an apocalyptic number.

It is an amenable number.

65605550000656 is a deficient number, since it is larger than the sum of its proper divisors (61505203125646).

65605550000656 is a wasteful number, since it uses less digits than its factorization.

65605550000656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4100346875049 (or 4100346875043 counting only the distinct ones).

The product of its (nonzero) digits is 4050000, while the sum is 49.

It can be divided in two parts, 65605550000 and 656, that added together give a palindrome (65605550656).

The spelling of 65605550000656 in words is "sixty-five trillion, six hundred five billion, five hundred fifty million, six hundred fifty-six", and thus it is an aban number.