17999820131 has 2 divisors, whose sum is σ = 17999820132. Its totient is φ = 17999820130.

The previous prime is 17999820101. The next prime is 17999820161. The reversal of 17999820131 is 13102899971.

It is a balanced prime because it is at equal distance from previous prime (17999820101) and next prime (17999820161).

It is a cyclic number.

It is not a de Polignac number, because 17999820131 - 2¹⁰ = 17999819107 is a prime.

It is a super-2 number, since 2×17999820131² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 17999820131.

It is not a weakly prime, because it can be changed into another prime (17999820101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8999910065 + 8999910066.

It is an arithmetic number, because the mean of its divisors is an integer number (8999910066).

Almost surely, 2^17999820131 is an apocalyptic number.

17999820131 is a deficient number, since it is larger than the sum of its proper divisors (1).

17999820131 is an equidigital number, since it uses as much as digits as its factorization.

17999820131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 50.

The spelling of 17999820131 in words is "seventeen billion, nine hundred ninety-nine million, eight hundred twenty thousand, one hundred thirty-one".