10665661005016 has 8 divisors (see below), whose sum is σ = 19998114384420. Its totient is φ = 5332830502504.

The previous prime is 10665661005007. The next prime is 10665661005019. The reversal of 10665661005016 is 61050016656601.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×10665661005016² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10665661005019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666603812806 + ... + 666603812821.

Almost surely, 2^{10665661005016} is an apocalyptic number.

It is an amenable number.

10665661005016 is a deficient number, since it is larger than the sum of its proper divisors (9332453379404).

10665661005016 is a wasteful number, since it uses less digits than its factorization.

10665661005016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333207625633 (or 1333207625629 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 10665661005016 in words is "ten trillion, six hundred sixty-five billion, six hundred sixty-one million, five thousand, sixteen".