321155612263 has 4 divisors (see below), whose sum is σ = 322376736528. Its totient is φ = 319934488000.

The previous prime is 321155612257. The next prime is 321155612269. The reversal of 321155612263 is 362216551123.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (321155612257) and next prime (321155612269).

It is a cyclic number.

It is not a de Polignac number, because 321155612263 - 2¹⁷ = 321155481191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321155612269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 610561738 + ... + 610562263.

It is an arithmetic number, because the mean of its divisors is an integer number (80594184132).

Almost surely, 2^321155612263 is an apocalyptic number.

321155612263 is a deficient number, since it is larger than the sum of its proper divisors (1221124265).

321155612263 is a wasteful number, since it uses less digits than its factorization.

321155612263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221124264.

The product of its digits is 64800, while the sum is 37.

The spelling of 321155612263 in words is "three hundred twenty-one billion, one hundred fifty-five million, six hundred twelve thousand, two hundred sixty-three".