21492310727 has 8 divisors (see below), whose sum is σ = 22610264400. Its totient is φ = 20399479744.

The previous prime is 21492310709. The next prime is 21492310751. The reversal of 21492310727 is 72701329412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21492310727 - 2⁶ = 21492310663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21492310127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6278918 + ... + 6282339.

It is an arithmetic number, because the mean of its divisors is an integer number (2826283050).

Almost surely, 2^21492310727 is an apocalyptic number.

21492310727 is a deficient number, since it is larger than the sum of its proper divisors (1117953673).

21492310727 is a wasteful number, since it uses less digits than its factorization.

21492310727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12561345.

The product of its (nonzero) digits is 42336, while the sum is 38.

The spelling of 21492310727 in words is "twenty-one billion, four hundred ninety-two million, three hundred ten thousand, seven hundred twenty-seven".