996983343889 has 16 divisors (see below), whose sum is σ = 1075735232208. Its totient is φ = 918527081472.

The previous prime is 996983343877. The next prime is 996983343973. The reversal of 996983343889 is 988343389699.

It can be written as a sum of positive squares in 8 ways, for example, as 56160942289 + 940822401600 = 236983^2 + 969960^2 .

It is not a de Polignac number, because 996983343889 - 2⁵ = 996983343857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (996983343809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20896149 + ... + 20943805.

It is an arithmetic number, because the mean of its divisors is an integer number (67233452013).

Almost surely, 2^996983343889 is an apocalyptic number.

It is an amenable number.

996983343889 is a deficient number, since it is larger than the sum of its proper divisors (78751888319).

996983343889 is a wasteful number, since it uses less digits than its factorization.

996983343889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50724.

The product of its digits is 2176782336, while the sum is 79.

The spelling of 996983343889 in words is "nine hundred ninety-six billion, nine hundred eighty-three million, three hundred forty-three thousand, eight hundred eighty-nine".