40254646139 has 2 divisors, whose sum is σ = 40254646140. Its totient is φ = 40254646138.

The previous prime is 40254646127. The next prime is 40254646141. The reversal of 40254646139 is 93164645204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40254646139 - 2²⁰ = 40253597563 is a prime.

It is a super-2 number, since 2×40254646139² (a number of 22 digits) contains 22 as substring.

Together with 40254646141, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40254646139.

It is not a weakly prime, because it can be changed into another prime (40254646189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20127323069 + 20127323070.

It is an arithmetic number, because the mean of its divisors is an integer number (20127323070).

Almost surely, 2^40254646139 is an apocalyptic number.

40254646139 is a deficient number, since it is larger than the sum of its proper divisors (1).

40254646139 is an equidigital number, since it uses as much as digits as its factorization.

40254646139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 40254646139 in words is "forty billion, two hundred fifty-four million, six hundred forty-six thousand, one hundred thirty-nine".