22056745619 has 4 divisors (see below), whose sum is σ = 22367404080. Its totient is φ = 21746087160.

The previous prime is 22056745603. The next prime is 22056745649. The reversal of 22056745619 is 91654765022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22056745619 - 2⁴ = 22056745603 is a prime.

It is a super-2 number, since 2×22056745619² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22056745649) 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, 155329124 + ... + 155329265.

It is an arithmetic number, because the mean of its divisors is an integer number (5591851020).

Almost surely, 2^22056745619 is an apocalyptic number.

22056745619 is a deficient number, since it is larger than the sum of its proper divisors (310658461).

22056745619 is an equidigital number, since it uses as much as digits as its factorization.

22056745619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310658460.

The product of its (nonzero) digits is 907200, while the sum is 47.

The spelling of 22056745619 in words is "twenty-two billion, fifty-six million, seven hundred forty-five thousand, six hundred nineteen".