23971642045 has 8 divisors (see below), whose sum is σ = 30978737496. Its totient is φ = 17702135616.

The previous prime is 23971642043. The next prime is 23971642073. The reversal of 23971642045 is 54024617932.

It can be written as a sum of positive squares in 4 ways, for example, as 3836315844 + 20135326201 = 61938^2 + 141899^2 .

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 23971642045 - 2¹ = 23971642043 is a prime.

It is a super-2 number, since 2×23971642045² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23971641992 and 23971642010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23971642043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184397182 + ... + 184397311.

It is an arithmetic number, because the mean of its divisors is an integer number (3872342187).

Almost surely, 2^23971642045 is an apocalyptic number.

It is an amenable number.

23971642045 is a deficient number, since it is larger than the sum of its proper divisors (7007095451).

23971642045 is a wasteful number, since it uses less digits than its factorization.

23971642045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368794511.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 23971642045 in words is "twenty-three billion, nine hundred seventy-one million, six hundred forty-two thousand, forty-five".