40427743205 has 4 divisors (see below), whose sum is σ = 48513291852. Its totient is φ = 32342194560.

The previous prime is 40427743201. The next prime is 40427743253. The reversal of 40427743205 is 50234772404.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31360513921 + 9067229284 = 177089^2 + 95222^2 .

It is not a de Polignac number, because 40427743205 - 2² = 40427743201 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40427743201) 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, 4042774316 + ... + 4042774325.

It is an arithmetic number, because the mean of its divisors is an integer number (12128322963).

Almost surely, 2^40427743205 is an apocalyptic number.

It is an amenable number.

40427743205 is a deficient number, since it is larger than the sum of its proper divisors (8085548647).

40427743205 is an equidigital number, since it uses as much as digits as its factorization.

40427743205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8085548646.

The product of its (nonzero) digits is 188160, while the sum is 38.

The spelling of 40427743205 in words is "forty billion, four hundred twenty-seven million, seven hundred forty-three thousand, two hundred five".