22554380161 has 4 divisors (see below), whose sum is σ = 22554761152. Its totient is φ = 22553999172.

The previous prime is 22554380159. The next prime is 22554380183. The reversal of 22554380161 is 16108345522.

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 a cyclic number.

It is not a de Polignac number, because 22554380161 - 2¹ = 22554380159 is a prime.

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 22554380161.

It is not an unprimeable number, because it can be changed into a prime (22554380461) 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, 80541 + ... + 227146.

It is an arithmetic number, because the mean of its divisors is an integer number (5638690288).

Almost surely, 2^22554380161 is an apocalyptic number.

It is an amenable number.

22554380161 is a deficient number, since it is larger than the sum of its proper divisors (380991).

22554380161 is an equidigital number, since it uses as much as digits as its factorization.

22554380161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380990.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 22554380161 in words is "twenty-two billion, five hundred fifty-four million, three hundred eighty thousand, one hundred sixty-one".