10666566615 has 48 divisors (see below), whose sum is σ = 18169488000. Its totient is φ = 5342384640.

The previous prime is 10666566611. The next prime is 10666566637. The reversal of 10666566615 is 51666566601.

It is not a de Polignac number, because 10666566615 - 2² = 10666566611 is a prime.

It is a super-2 number, since 2×10666566615² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10666566611) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2160700 + ... + 2165630.

It is an arithmetic number, because the mean of its divisors is an integer number (378531000).

Almost surely, 2^10666566615 is an apocalyptic number.

10666566615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10666566615 is a deficient number, since it is larger than the sum of its proper divisors (7502921385).

10666566615 is a wasteful number, since it uses less digits than its factorization.

10666566615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5472 (or 5455 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 48.

The spelling of 10666566615 in words is "ten billion, six hundred sixty-six million, five hundred sixty-six thousand, six hundred fifteen".