10656654664 has 8 divisors (see below), whose sum is σ = 19981227510. Its totient is φ = 5328327328.

The previous prime is 10656654661. The next prime is 10656654667. The reversal of 10656654664 is 46645665601.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10656654661) and next prime (10656654667).

It can be written as a sum of positive squares in only one way, i.e., 9680592100 + 976062564 = 98390^2 + 31242^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×10656654664² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10656654661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666040909 + ... + 666040924.

Almost surely, 2^10656654664 is an apocalyptic number.

It is an amenable number.

10656654664 is a deficient number, since it is larger than the sum of its proper divisors (9324572846).

10656654664 is a wasteful number, since it uses less digits than its factorization.

10656654664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332081839 (or 1332081835 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 49.

The spelling of 10656654664 in words is "ten billion, six hundred fifty-six million, six hundred fifty-four thousand, six hundred sixty-four".