10665661057 has 16 divisors (see below), whose sum is σ = 10906877952. Its totient is φ = 10427178960.

The previous prime is 10665661051. The next prime is 10665661063. The reversal of 10665661057 is 75016656601.

It is an interprime number because it is at equal distance from previous prime (10665661051) and next prime (10665661063).

It is a cyclic number.

It is not a de Polignac number, because 10665661057 - 2³ = 10665661049 is a prime.

It is a super-2 number, since 2×10665661057² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10665661051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5824132 + ... + 5825962.

It is an arithmetic number, because the mean of its divisors is an integer number (681679872).

Almost surely, 2^10665661057 is an apocalyptic number.

It is an amenable number.

10665661057 is a deficient number, since it is larger than the sum of its proper divisors (241216895).

10665661057 is a wasteful number, since it uses less digits than its factorization.

10665661057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508.

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 10665661057 in words is "ten billion, six hundred sixty-five million, six hundred sixty-one thousand, fifty-seven".