10661515612 has 24 divisors (see below), whose sum is σ = 20356690032. Its totient is φ = 4845456000.

The previous prime is 10661515549. The next prime is 10661515687. The reversal of 10661515612 is 21651516601.

It is a super-2 number, since 2×10661515612² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423408 + ... + 447880.

It is an arithmetic number, because the mean of its divisors is an integer number (848195418).

Almost surely, 2^10661515612 is an apocalyptic number.

It is an amenable number.

10661515612 is a deficient number, since it is larger than the sum of its proper divisors (9695174420).

10661515612 is a wasteful number, since it uses less digits than its factorization.

10661515612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34389 (or 34387 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 34.

The spelling of 10661515612 in words is "ten billion, six hundred sixty-one million, five hundred fifteen thousand, six hundred twelve".