15794224581 has 4 divisors (see below), whose sum is σ = 21058966112. Its totient is φ = 10529483052.

The previous prime is 15794224573. The next prime is 15794224583. The reversal of 15794224581 is 18542249751.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 15794224581 - 2³ = 15794224573 is a prime.

It is a super-2 number, since 2×15794224581² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15794224581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15794224583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2632370761 + ... + 2632370766.

It is an arithmetic number, because the mean of its divisors is an integer number (5264741528).

Almost surely, 2^15794224581 is an apocalyptic number.

It is an amenable number.

15794224581 is a deficient number, since it is larger than the sum of its proper divisors (5264741531).

15794224581 is an equidigital number, since it uses as much as digits as its factorization.

15794224581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5264741530.

The product of its digits is 806400, while the sum is 48.

The spelling of 15794224581 in words is "fifteen billion, seven hundred ninety-four million, two hundred twenty-four thousand, five hundred eighty-one".