40066043431 has 2 divisors, whose sum is σ = 40066043432. Its totient is φ = 40066043430.

The previous prime is 40066043383. The next prime is 40066043473. The reversal of 40066043431 is 13434066004.

It is a happy number.

40066043431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40066043431 - 2²³ = 40057654823 is a prime.

It is a super-2 number, since 2×40066043431² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40066043393 and 40066043402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40066143431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20033021715 + 20033021716.

It is an arithmetic number, because the mean of its divisors is an integer number (20033021716).

Almost surely, 2^40066043431 is an apocalyptic number.

40066043431 is a deficient number, since it is larger than the sum of its proper divisors (1).

40066043431 is an equidigital number, since it uses as much as digits as its factorization.

40066043431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 31.

The spelling of 40066043431 in words is "forty billion, sixty-six million, forty-three thousand, four hundred thirty-one".