21427157714 has 16 divisors (see below), whose sum is σ = 34142236128. Its totient is φ = 10050518592.

The previous prime is 21427157711. The next prime is 21427157737. The reversal of 21427157714 is 41775172412.

It is not an unprimeable number, because it can be changed into a prime (21427157711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1015964 + ... + 1036839.

It is an arithmetic number, because the mean of its divisors is an integer number (2133889758).

Almost surely, 2^21427157714 is an apocalyptic number.

21427157714 is a deficient number, since it is larger than the sum of its proper divisors (12715078414).

21427157714 is a wasteful number, since it uses less digits than its factorization.

21427157714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053129.

The product of its digits is 109760, while the sum is 41.

The spelling of 21427157714 in words is "twenty-one billion, four hundred twenty-seven million, one hundred fifty-seven thousand, seven hundred fourteen".