10656211821278 has 32 divisors (see below), whose sum is σ = 16112586720000. Its totient is φ = 5285519205120.

The previous prime is 10656211821257. The next prime is 10656211821341. The reversal of 10656211821278 is 87212811265601.

It is a super-2 number, since 2×10656211821278² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 506969453 + ... + 506990471.

It is an arithmetic number, because the mean of its divisors is an integer number (503518335000).

Almost surely, 2^{10656211821278} is an apocalyptic number.

10656211821278 is a deficient number, since it is larger than the sum of its proper divisors (5456374898722).

10656211821278 is a wasteful number, since it uses less digits than its factorization.

10656211821278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24960.

The product of its (nonzero) digits is 645120, while the sum is 50.

The spelling of 10656211821278 in words is "ten trillion, six hundred fifty-six billion, two hundred eleven million, eight hundred twenty-one thousand, two hundred seventy-eight".