16326440789427 has 32 divisors (see below), whose sum is σ = 24912619545600. Its totient is φ = 10559604442464.

The previous prime is 16326440789401. The next prime is 16326440789521. The reversal of 16326440789427 is 72498704462361.

16326440789427 is a `hidden beast` number, since 1 + 6 + 32 + 6 + 440 + 78 + 94 + 2 + 7 = 666.

It is not a de Polignac number, because 16326440789427 - 2²² = 16326436595123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16326440782427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23202027 + ... + 23895332.

It is an arithmetic number, because the mean of its divisors is an integer number (778519360800).

Almost surely, 2^{16326440789427} is an apocalyptic number.

16326440789427 is a deficient number, since it is larger than the sum of its proper divisors (8586178756173).

16326440789427 is a wasteful number, since it uses less digits than its factorization.

16326440789427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47097752 (or 47097746 counting only the distinct ones).

The product of its (nonzero) digits is 97542144, while the sum is 63.

The spelling of 16326440789427 in words is "sixteen trillion, three hundred twenty-six billion, four hundred forty million, seven hundred eighty-nine thousand, four hundred twenty-seven".