22159705409 has 4 divisors (see below), whose sum is σ = 22758616404. Its totient is φ = 21560794416.

The previous prime is 22159705391. The next prime is 22159705427. The reversal of 22159705409 is 90450795122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90450795122 = 2 ⋅45225397561.

It is an interprime number because it is at equal distance from previous prime (22159705391) and next prime (22159705427).

It can be written as a sum of positive squares in 2 ways, for example, as 15385921600 + 6773783809 = 124040^2 + 82303^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22159705409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22159705409.

It is not an unprimeable number, because it can be changed into a prime (22159705499) 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 3 ways as a sum of consecutive naturals, for example, 299455442 + ... + 299455515.

It is an arithmetic number, because the mean of its divisors is an integer number (5689654101).

Almost surely, 2^22159705409 is an apocalyptic number.

It is an amenable number.

22159705409 is a deficient number, since it is larger than the sum of its proper divisors (598910995).

22159705409 is an equidigital number, since it uses as much as digits as its factorization.

22159705409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598910994.

The product of its (nonzero) digits is 226800, while the sum is 44.

The spelling of 22159705409 in words is "twenty-two billion, one hundred fifty-nine million, seven hundred five thousand, four hundred nine".