40123199959 has 2 divisors, whose sum is σ = 40123199960. Its totient is φ = 40123199958.

The previous prime is 40123199947. The next prime is 40123200041. The reversal of 40123199959 is 95999132104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40123199959 - 2¹¹ = 40123197911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40123199159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20061599979 + 20061599980.

It is an arithmetic number, because the mean of its divisors is an integer number (20061599980).

Almost surely, 2^40123199959 is an apocalyptic number.

40123199959 is a deficient number, since it is larger than the sum of its proper divisors (1).

40123199959 is an equidigital number, since it uses as much as digits as its factorization.

40123199959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 787320, while the sum is 52.

The spelling of 40123199959 in words is "forty billion, one hundred twenty-three million, one hundred ninety-nine thousand, nine hundred fifty-nine".