20023767743 has 4 divisors (see below), whose sum is σ = 22884306000. Its totient is φ = 17163229488.

The previous prime is 20023767733. The next prime is 20023767769. The reversal of 20023767743 is 34776732002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20023767743 - 2⁸ = 20023767487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20023767743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023767733) 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, 1430269118 + ... + 1430269131.

It is an arithmetic number, because the mean of its divisors is an integer number (5721076500).

Almost surely, 2^20023767743 is an apocalyptic number.

20023767743 is a deficient number, since it is larger than the sum of its proper divisors (2860538257).

20023767743 is an equidigital number, since it uses as much as digits as its factorization.

20023767743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2860538256.

The product of its (nonzero) digits is 296352, while the sum is 41.

The spelling of 20023767743 in words is "twenty billion, twenty-three million, seven hundred sixty-seven thousand, seven hundred forty-three".