10656660465 has 48 divisors (see below), whose sum is σ = 20187475776. Its totient is φ = 5157456000.

The previous prime is 10656660433. The next prime is 10656660493. The reversal of 10656660465 is 56406665601.

It is not a de Polignac number, because 10656660465 - 2⁵ = 10656660433 is a prime.

It is a super-2 number, since 2×10656660465² (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 self number, because there is not a number n which added to its sum of digits gives 10656660465.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 256390 + ... + 295040.

It is an arithmetic number, because the mean of its divisors is an integer number (420572412).

Almost surely, 2^10656660465 is an apocalyptic number.

10656660465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10656660465 is a deficient number, since it is larger than the sum of its proper divisors (9530815311).

10656660465 is a wasteful number, since it uses less digits than its factorization.

10656660465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39230 (or 39227 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 10656660465 in words is "ten billion, six hundred fifty-six million, six hundred sixty thousand, four hundred sixty-five".