17996090087 has 2 divisors, whose sum is σ = 17996090088. Its totient is φ = 17996090086.

The previous prime is 17996090069. The next prime is 17996090149. The reversal of 17996090087 is 78009069971.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 17996090087 - 2¹⁰ = 17996089063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17996090687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8998045043 + 8998045044.

It is an arithmetic number, because the mean of its divisors is an integer number (8998045044).

Almost surely, 2^17996090087 is an apocalyptic number.

17996090087 is a deficient number, since it is larger than the sum of its proper divisors (1).

17996090087 is an equidigital number, since it uses as much as digits as its factorization.

17996090087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1714608, while the sum is 56.

The spelling of 17996090087 in words is "seventeen billion, nine hundred ninety-six million, ninety thousand, eighty-seven".