996609875993 has 2 divisors, whose sum is σ = 996609875994. Its totient is φ = 996609875992.

The previous prime is 996609875969. The next prime is 996609876061. The reversal of 996609875993 is 399578906699.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 603865759744 + 392744116249 = 777088^2 + 626693^2 .

It is a cyclic number.

It is not a de Polignac number, because 996609875993 - 2²⁴ = 996593098777 is a prime.

It is not a weakly prime, because it can be changed into another prime (996609875903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498304937996 + 498304937997.

It is an arithmetic number, because the mean of its divisors is an integer number (498304937997).

Almost surely, 2^996609875993 is an apocalyptic number.

It is an amenable number.

996609875993 is a deficient number, since it is larger than the sum of its proper divisors (1).

996609875993 is an equidigital number, since it uses as much as digits as its factorization.

996609875993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1785641760, while the sum is 80.

The spelling of 996609875993 in words is "nine hundred ninety-six billion, six hundred nine million, eight hundred seventy-five thousand, nine hundred ninety-three".