40509407231999 has 2 divisors, whose sum is σ = 40509407232000. Its totient is φ = 40509407231998.

The previous prime is 40509407231989. The next prime is 40509407232023. The reversal of 40509407231999 is 99913270490504.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40509407231999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40509407231989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20254703615999 + 20254703616000.

It is an arithmetic number, because the mean of its divisors is an integer number (20254703616000).

Almost surely, 2^{40509407231999} is an apocalyptic number.

40509407231999 is a deficient number, since it is larger than the sum of its proper divisors (1).

40509407231999 is an equidigital number, since it uses as much as digits as its factorization.

40509407231999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22044960, while the sum is 62.

The spelling of 40509407231999 in words is "forty trillion, five hundred nine billion, four hundred seven million, two hundred thirty-one thousand, nine hundred ninety-nine".