10661065056556 has 12 divisors (see below), whose sum is σ = 18656889328168. Its totient is φ = 5330525248512.

The previous prime is 10661065056533. The next prime is 10661065056611. The reversal of 10661065056556 is 65565056016601.

It is a super-2 number, since 2×10661065056556² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2750380 + ... + 5374636.

Almost surely, 2^{10661065056556} is an apocalyptic number.

It is an amenable number.

10661065056556 is a deficient number, since it is larger than the sum of its proper divisors (7995824271612).

10661065056556 is a wasteful number, since it uses less digits than its factorization.

10661065056556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3639888 (or 3639886 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 52.

The spelling of 10661065056556 in words is "ten trillion, six hundred sixty-one billion, sixty-five million, fifty-six thousand, five hundred fifty-six".