21155014256326 has 8 divisors (see below), whose sum is σ = 31732556441400. Its totient is φ = 10577495442528.

The previous prime is 21155014256317. The next prime is 21155014256371. The reversal of 21155014256326 is 62365241055112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3370696 + ... + 7326091.

It is an arithmetic number, because the mean of its divisors is an integer number (3966569555175).

Almost surely, 2^{21155014256326} is an apocalyptic number.

21155014256326 is a deficient number, since it is larger than the sum of its proper divisors (10577542185074).

21155014256326 is a wasteful number, since it uses less digits than its factorization.

21155014256326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11685638.

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 21155014256326 in words is "twenty-one trillion, one hundred fifty-five billion, fourteen million, two hundred fifty-six thousand, three hundred twenty-six".