321662114591 has 2 divisors, whose sum is σ = 321662114592. Its totient is φ = 321662114590.

The previous prime is 321662114551. The next prime is 321662114647. The reversal of 321662114591 is 195411266123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321662114591 - 2¹⁴ = 321662098207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321662114551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160831057295 + 160831057296.

It is an arithmetic number, because the mean of its divisors is an integer number (160831057296).

Almost surely, 2^321662114591 is an apocalyptic number.

321662114591 is a deficient number, since it is larger than the sum of its proper divisors (1).

321662114591 is an equidigital number, since it uses as much as digits as its factorization.

321662114591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The spelling of 321662114591 in words is "three hundred twenty-one billion, six hundred sixty-two million, one hundred fourteen thousand, five hundred ninety-one".