21326250327 has 16 divisors (see below), whose sum is σ = 29386330848. Its totient is φ = 13747973120.

The previous prime is 21326250263. The next prime is 21326250331. The reversal of 21326250327 is 72305262312.

It is a cyclic number.

It is not a de Polignac number, because 21326250327 - 2⁶ = 21326250263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21326250527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 753288 + ... + 781085.

It is an arithmetic number, because the mean of its divisors is an integer number (1836645678).

Almost surely, 2^21326250327 is an apocalyptic number.

21326250327 is a deficient number, since it is larger than the sum of its proper divisors (8060080521).

21326250327 is a wasteful number, since it uses less digits than its factorization.

21326250327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534530.

The product of its (nonzero) digits is 30240, while the sum is 33.

The spelling of 21326250327 in words is "twenty-one billion, three hundred twenty-six million, two hundred fifty thousand, three hundred twenty-seven".