10656660434 has 12 divisors (see below), whose sum is σ = 18594785214. Its totient is φ = 4567140144.

The previous prime is 10656660433. The next prime is 10656660493. The reversal of 10656660434 is 43406665601.

It can be written as a sum of positive squares in only one way, i.e., 7014900025 + 3641760409 = 83755^2 + 60347^2 .

It is a super-2 number, since 2×10656660434² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10656660391 and 10656660400.

It is not an unprimeable number, because it can be changed into a prime (10656660433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54370619 + ... + 54370814.

Almost surely, 2^10656660434 is an apocalyptic number.

10656660434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

10656660434 is a deficient number, since it is larger than the sum of its proper divisors (7938124780).

10656660434 is a wasteful number, since it uses less digits than its factorization.

10656660434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108741449 (or 108741442 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 10656660434 in words is "ten billion, six hundred fifty-six million, six hundred sixty thousand, four hundred thirty-four".