21130592257 has 8 divisors (see below), whose sum is σ = 21239291232. Its totient is φ = 21021974400.

The previous prime is 21130592233. The next prime is 21130592291. The reversal of 21130592257 is 75229503112.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21130592257 - 2²³ = 21122203649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21130592557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 541782 + ... + 579472.

It is an arithmetic number, because the mean of its divisors is an integer number (2654911404).

Almost surely, 2^21130592257 is an apocalyptic number.

It is an amenable number.

21130592257 is a deficient number, since it is larger than the sum of its proper divisors (108698975).

21130592257 is a wasteful number, since it uses less digits than its factorization.

21130592257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40559.

The product of its (nonzero) digits is 37800, while the sum is 37.

The spelling of 21130592257 in words is "twenty-one billion, one hundred thirty million, five hundred ninety-two thousand, two hundred fifty-seven".