22661824145 has 4 divisors (see below), whose sum is σ = 27194188980. Its totient is φ = 18129459312.

The previous prime is 22661824117. The next prime is 22661824151. The reversal of 22661824145 is 54142816622.

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 17670119041 + 4991705104 = 132929^2 + 70652^2 .

It is a cyclic number.

It is not a de Polignac number, because 22661824145 - 2⁸ = 22661823889 is a prime.

It is a super-3 number, since 3×22661824145³ (a number of 32 digits) contains 333 as substring.

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, 2266182410 + ... + 2266182419.

It is an arithmetic number, because the mean of its divisors is an integer number (6798547245).

Almost surely, 2^22661824145 is an apocalyptic number.

It is an amenable number.

22661824145 is a deficient number, since it is larger than the sum of its proper divisors (4532364835).

22661824145 is an equidigital number, since it uses as much as digits as its factorization.

22661824145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4532364834.

The product of its digits is 184320, while the sum is 41.

The spelling of 22661824145 in words is "twenty-two billion, six hundred sixty-one million, eight hundred twenty-four thousand, one hundred forty-five".