21425321614 has 16 divisors (see below), whose sum is σ = 33929859600. Its totient is φ = 10118715264.

The previous prime is 21425321591. The next prime is 21425321647. The reversal of 21425321614 is 41612352412.

It is a congruent number.

It is an unprimeable number.

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, 823729 + ... + 849340.

It is an arithmetic number, because the mean of its divisors is an integer number (2120616225).

Almost surely, 2^21425321614 is an apocalyptic number.

21425321614 is a deficient number, since it is larger than the sum of its proper divisors (12504537986).

21425321614 is a wasteful number, since it uses less digits than its factorization.

21425321614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673427.

The product of its digits is 11520, while the sum is 31.

The spelling of 21425321614 in words is "twenty-one billion, four hundred twenty-five million, three hundred twenty-one thousand, six hundred fourteen".