10513409666 has 16 divisors (see below), whose sum is σ = 16158349368. Its totient is φ = 5127350400.

The previous prime is 10513409653. The next prime is 10513409681. The reversal of 10513409666 is 66690431501.

It can be written as a sum of positive squares in 4 ways, for example, as 5794406641 + 4719003025 = 76121^2 + 68695^2 .

It is a super-2 number, since 2×10513409666² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

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, 446156 + ... + 469128.

Almost surely, 2^10513409666 is an apocalyptic number.

10513409666 is a deficient number, since it is larger than the sum of its proper divisors (5644939702).

10513409666 is a wasteful number, since it uses less digits than its factorization.

10513409666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28597.

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 10513409666 in words is "ten billion, five hundred thirteen million, four hundred nine thousand, six hundred sixty-six".