999932559361 has 2 divisors, whose sum is σ = 999932559362. Its totient is φ = 999932559360.

The previous prime is 999932559347. The next prime is 999932559371. The reversal of 999932559361 is 163955239999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 909436878736 + 90495680625 = 953644^2 + 300825^2 .

It is an emirp because it is prime and its reverse (163955239999) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999932559361 is a prime.

It is not a weakly prime, because it can be changed into another prime (999932559371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499966279680 + 499966279681.

It is an arithmetic number, because the mean of its divisors is an integer number (499966279681).

It is a Proth number, since it is equal to 476805 ⋅ 2²¹ + 1 and 476805 < 2²¹.

Almost surely, 2^999932559361 is an apocalyptic number.

It is an amenable number.

999932559361 is a deficient number, since it is larger than the sum of its proper divisors (1).

999932559361 is an equidigital number, since it uses as much as digits as its factorization.

999932559361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 159432300, while the sum is 70.

The spelling of 999932559361 in words is "nine hundred ninety-nine billion, nine hundred thirty-two million, five hundred fifty-nine thousand, three hundred sixty-one".