22150055645 has 4 divisors (see below), whose sum is σ = 26580066780. Its totient is φ = 17720044512.

The previous prime is 22150055621. The next prime is 22150055671. The reversal of 22150055645 is 54655005122.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15536625316 + 6613430329 = 124646^2 + 81323^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22150055645 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2215005560 + ... + 2215005569.

It is an arithmetic number, because the mean of its divisors is an integer number (6645016695).

Almost surely, 2^22150055645 is an apocalyptic number.

It is an amenable number.

22150055645 is a deficient number, since it is larger than the sum of its proper divisors (4430011135).

22150055645 is an equidigital number, since it uses as much as digits as its factorization.

22150055645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4430011134.

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 22150055645 in words is "twenty-two billion, one hundred fifty million, fifty-five thousand, six hundred forty-five".