999860941511 has 2 divisors, whose sum is σ = 999860941512. Its totient is φ = 999860941510.

The previous prime is 999860941487. The next prime is 999860941531. The reversal of 999860941511 is 115149068999.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999860941511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999860941531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499930470755 + 499930470756.

It is an arithmetic number, because the mean of its divisors is an integer number (499930470756).

Almost surely, 2^999860941511 is an apocalyptic number.

999860941511 is a deficient number, since it is larger than the sum of its proper divisors (1).

999860941511 is an equidigital number, since it uses as much as digits as its factorization.

999860941511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6298560, while the sum is 62.

The spelling of 999860941511 in words is "nine hundred ninety-nine billion, eight hundred sixty million, nine hundred forty-one thousand, five hundred eleven".