21492325713 has 16 divisors (see below), whose sum is σ = 29155066560. Its totient is φ = 14079116736.

The previous prime is 21492325709. The next prime is 21492325721. The reversal of 21492325713 is 31752329412.

It is a happy number.

It is not a de Polignac number, because 21492325713 - 2² = 21492325709 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21492325783) 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, 391431 + ... + 442947.

It is an arithmetic number, because the mean of its divisors is an integer number (1822191660).

Almost surely, 2^21492325713 is an apocalyptic number.

It is an amenable number.

21492325713 is a deficient number, since it is larger than the sum of its proper divisors (7662740847).

21492325713 is a wasteful number, since it uses less digits than its factorization.

21492325713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53936.

The product of its digits is 90720, while the sum is 39.

The spelling of 21492325713 in words is "twenty-one billion, four hundred ninety-two million, three hundred twenty-five thousand, seven hundred thirteen".