996156651689 has 2 divisors, whose sum is σ = 996156651690. Its totient is φ = 996156651688.

The previous prime is 996156651593. The next prime is 996156651731. The reversal of 996156651689 is 986156651699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 821938065664 + 174218586025 = 906608^2 + 417395^2 .

It is an emirp because it is prime and its reverse (986156651699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 996156651689 - 2¹⁶ = 996156586153 is a prime.

It is not a weakly prime, because it can be changed into another prime (996156651289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498078325844 + 498078325845.

It is an arithmetic number, because the mean of its divisors is an integer number (498078325845).

Almost surely, 2^996156651689 is an apocalyptic number.

It is an amenable number.

996156651689 is a deficient number, since it is larger than the sum of its proper divisors (1).

996156651689 is an equidigital number, since it uses as much as digits as its factorization.

996156651689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 188956800, while the sum is 71.

The spelling of 996156651689 in words is "nine hundred ninety-six billion, one hundred fifty-six million, six hundred fifty-one thousand, six hundred eighty-nine".