20206267743 has 4 divisors (see below), whose sum is σ = 26941690328. Its totient is φ = 13470845160.

The previous prime is 20206267723. The next prime is 20206267769. The reversal of 20206267743 is 34776260202.

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

It is not a de Polignac number, because 20206267743 - 2¹² = 20206263647 is a prime.

It is a super-2 number, since 2×20206267743² (a number of 21 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 (20206267723) 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 3 ways as a sum of consecutive naturals, for example, 3367711288 + ... + 3367711293.

It is an arithmetic number, because the mean of its divisors is an integer number (6735422582).

Almost surely, 2^20206267743 is an apocalyptic number.

20206267743 is a deficient number, since it is larger than the sum of its proper divisors (6735422585).

20206267743 is an equidigital number, since it uses as much as digits as its factorization.

20206267743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6735422584.

The product of its (nonzero) digits is 169344, while the sum is 39.

The spelling of 20206267743 in words is "twenty billion, two hundred six million, two hundred sixty-seven thousand, seven hundred forty-three".