996128731329 has 16 divisors (see below), whose sum is σ = 1330381563264. Its totient is φ = 662981312000.

The previous prime is 996128731309. The next prime is 996128731363. The reversal of 996128731329 is 923137821699.

It is a cyclic number.

It is not a de Polignac number, because 996128731329 - 2²⁸ = 995860295873 is a prime.

It is a super-2 number, since 2×996128731329² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (996128731309) 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, 9180337 + ... + 9288209.

It is an arithmetic number, because the mean of its divisors is an integer number (83148847704).

Almost surely, 2^996128731329 is an apocalyptic number.

It is an amenable number.

996128731329 is a deficient number, since it is larger than the sum of its proper divisors (334252831935).

996128731329 is a wasteful number, since it uses less digits than its factorization.

996128731329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112968.

The product of its digits is 8817984, while the sum is 60.

The spelling of 996128731329 in words is "nine hundred ninety-six billion, one hundred twenty-eight million, seven hundred thirty-one thousand, three hundred twenty-nine".