23644036445 has 8 divisors (see below), whose sum is σ = 28438372536. Its totient is φ = 18871543296.

The previous prime is 23644036393. The next prime is 23644036517. The reversal of 23644036445 is 54463044632.

It can be written as a sum of positive squares in 4 ways, for example, as 216060601 + 23427975844 = 14699^2 + 153062^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23644036445 - 2⁸ = 23644036189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5458352 + ... + 5462681.

It is an arithmetic number, because the mean of its divisors is an integer number (3554796567).

Almost surely, 2^23644036445 is an apocalyptic number.

It is an amenable number.

23644036445 is a deficient number, since it is larger than the sum of its proper divisors (4794336091).

23644036445 is a wasteful number, since it uses less digits than its factorization.

23644036445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10921471.

The product of its (nonzero) digits is 829440, while the sum is 41.

The spelling of 23644036445 in words is "twenty-three billion, six hundred forty-four million, thirty-six thousand, four hundred forty-five".