10523646665 has 16 divisors (see below), whose sum is σ = 15059927808. Its totient is φ = 6902465856.

The previous prime is 10523646659. The next prime is 10523646673. The reversal of 10523646665 is 56664632501.

It is a cyclic number.

It is not a de Polignac number, because 10523646665 - 2¹⁴ = 10523630281 is a prime.

It is a super-2 number, since 2×10523646665² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6535622 + ... + 6537231.

It is an arithmetic number, because the mean of its divisors is an integer number (941245488).

Almost surely, 2^10523646665 is an apocalyptic number.

It is an amenable number.

10523646665 is a deficient number, since it is larger than the sum of its proper divisors (4536281143).

10523646665 is a wasteful number, since it uses less digits than its factorization.

10523646665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13072888.

The product of its (nonzero) digits is 777600, while the sum is 44.

The spelling of 10523646665 in words is "ten billion, five hundred twenty-three million, six hundred forty-six thousand, six hundred sixty-five".