23043160351661 has 4 divisors (see below), whose sum is σ = 23043517680000. Its totient is φ = 23042803023324.

The previous prime is 23043160351643. The next prime is 23043160351699. The reversal of 23043160351661 is 16615306134032.

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 23043160351661 - 2²⁶ = 23043093242797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23043160351061) 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, 178567421 + ... + 178696418.

It is an arithmetic number, because the mean of its divisors is an integer number (5760879420000).

Almost surely, 2^{23043160351661} is an apocalyptic number.

It is an amenable number.

23043160351661 is a deficient number, since it is larger than the sum of its proper divisors (357328339).

23043160351661 is an equidigital number, since it uses as much as digits as its factorization.

23043160351661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357328338.

The product of its (nonzero) digits is 233280, while the sum is 41.

Adding to 23043160351661 its reverse (16615306134032), we get a palindrome (39658466485693).

The spelling of 23043160351661 in words is "twenty-three trillion, forty-three billion, one hundred sixty million, three hundred fifty-one thousand, six hundred sixty-one".