10661560117 has 16 divisors (see below), whose sum is σ = 12090476160. Its totient is φ = 9320000832.

The previous prime is 10661560109. The next prime is 10661560123. The reversal of 10661560117 is 71106516601.

It is a cyclic number.

It is not a de Polignac number, because 10661560117 - 2³ = 10661560109 is a prime.

It is a super-2 number, since 2×10661560117² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10661560157) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 836688 + ... + 849334.

It is an arithmetic number, because the mean of its divisors is an integer number (755654760).

Almost surely, 2^10661560117 is an apocalyptic number.

It is an amenable number.

10661560117 is a deficient number, since it is larger than the sum of its proper divisors (1428916043).

10661560117 is a wasteful number, since it uses less digits than its factorization.

10661560117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16092.

The product of its (nonzero) digits is 7560, while the sum is 34.

The spelling of 10661560117 in words is "ten billion, six hundred sixty-one million, five hundred sixty thousand, one hundred seventeen".