321133777777 has 2 divisors, whose sum is σ = 321133777778. Its totient is φ = 321133777776.

The previous prime is 321133777771. The next prime is 321133777787. The reversal of 321133777777 is 777777331123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 309207172096 + 11926605681 = 556064^2 + 109209^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321133777777 is a prime.

It is not a weakly prime, because it can be changed into another prime (321133777771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160566888888 + 160566888889.

It is an arithmetic number, because the mean of its divisors is an integer number (160566888889).

Almost surely, 2^321133777777 is an apocalyptic number.

It is an amenable number.

321133777777 is a deficient number, since it is larger than the sum of its proper divisors (1).

321133777777 is an equidigital number, since it uses as much as digits as its factorization.

321133777777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6353046, while the sum is 55.

The spelling of 321133777777 in words is "three hundred twenty-one billion, one hundred thirty-three million, seven hundred seventy-seven thousand, seven hundred seventy-seven".