23661140445 has 40 divisors (see below), whose sum is σ = 43783027200. Its totient is φ = 12212195040.

The previous prime is 23661140443. The next prime is 23661140449. The reversal of 23661140445 is 54404116632.

23661140445 is a `hidden beast` number, since 2 + 36 + 611 + 4 + 0 + 4 + 4 + 5 = 666.

It is not a de Polignac number, because 23661140445 - 2¹ = 23661140443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23661140441) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 929745 + ... + 954854.

It is an arithmetic number, because the mean of its divisors is an integer number (1094575680).

Almost surely, 2^23661140445 is an apocalyptic number.

It is an amenable number.

23661140445 is a deficient number, since it is larger than the sum of its proper divisors (20121886755).

23661140445 is a wasteful number, since it uses less digits than its factorization.

23661140445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1884647 (or 1884638 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 23661140445 in words is "twenty-three billion, six hundred sixty-one million, one hundred forty thousand, four hundred forty-five".