10656215011 has 4 divisors (see below), whose sum is σ = 11475923872. Its totient is φ = 9836506152.

The previous prime is 10656214991. The next prime is 10656215149. The reversal of 10656215011 is 11051265601.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11051265601 = 337 ⋅32793073.

It is a cyclic number.

It is not a de Polignac number, because 10656215011 - 2²⁹ = 10119344099 is a prime.

It is a super-2 number, since 2×10656215011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10656215611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409854411 + ... + 409854436.

It is an arithmetic number, because the mean of its divisors is an integer number (2868980968).

Almost surely, 2^10656215011 is an apocalyptic number.

10656215011 is a deficient number, since it is larger than the sum of its proper divisors (819708861).

10656215011 is an equidigital number, since it uses as much as digits as its factorization.

10656215011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819708860.

The product of its (nonzero) digits is 1800, while the sum is 28.

The spelling of 10656215011 in words is "ten billion, six hundred fifty-six million, two hundred fifteen thousand, eleven".