40634992159 has 2 divisors, whose sum is σ = 40634992160. Its totient is φ = 40634992158.

The previous prime is 40634992157. The next prime is 40634992163. The reversal of 40634992159 is 95129943604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40634992159 - 2¹ = 40634992157 is a prime.

Together with 40634992157, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40634992157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20317496079 + 20317496080.

It is an arithmetic number, because the mean of its divisors is an integer number (20317496080).

Almost surely, 2^40634992159 is an apocalyptic number.

40634992159 is a deficient number, since it is larger than the sum of its proper divisors (1).

40634992159 is an equidigital number, since it uses as much as digits as its factorization.

40634992159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2099520, while the sum is 52.

The spelling of 40634992159 in words is "forty billion, six hundred thirty-four million, nine hundred ninety-two thousand, one hundred fifty-nine".