2023323043661 has 4 divisors (see below), whose sum is σ = 2023611314400. Its totient is φ = 2023034772924.

The previous prime is 2023323043657. The next prime is 2023323043697. The reversal of 2023323043661 is 1663403233202.

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 2023323043661 - 2² = 2023323043657 is a prime.

It is a super-2 number, since 2×2023323043661² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2023323003661) 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, 144124841 + ... + 144138878.

It is an arithmetic number, because the mean of its divisors is an integer number (505902828600).

Almost surely, 2^{2023323043661} is an apocalyptic number.

It is an amenable number.

2023323043661 is a deficient number, since it is larger than the sum of its proper divisors (288270739).

2023323043661 is an equidigital number, since it uses as much as digits as its factorization.

2023323043661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288270738.

The product of its (nonzero) digits is 93312, while the sum is 35.

Adding to 2023323043661 its reverse (1663403233202), we get a palindrome (3686726276863).

The spelling of 2023323043661 in words is "two trillion, twenty-three billion, three hundred twenty-three million, forty-three thousand, six hundred sixty-one".