10661568570 has 64 divisors (see below), whose sum is σ = 28455972480. Its totient is φ = 2840572800.

The previous prime is 10661568523. The next prime is 10661568583. The reversal of 10661568570 is 7586516601.

10661568570 is a `hidden beast` number, since 1 + 0 + 6 + 6 + 15 + 68 + 570 = 666.

It is a super-2 number, since 2×10661568570² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 299310 + ... + 333030.

It is an arithmetic number, because the mean of its divisors is an integer number (444624570).

Almost surely, 2^10661568570 is an apocalyptic number.

10661568570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10661568570 is an abundant number, since it is smaller than the sum of its proper divisors (17794403910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10661568570 is a wasteful number, since it uses less digits than its factorization.

10661568570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34908 (or 34902 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The spelling of 10661568570 in words is "ten billion, six hundred sixty-one million, five hundred sixty-eight thousand, five hundred seventy".