264234288821 has 4 divisors (see below), whose sum is σ = 264236499072. Its totient is φ = 264232078572.

The previous prime is 264234288809. The next prime is 264234288839. The reversal of 264234288821 is 128882432462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 264234288821 - 2³⁴ = 247054419637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 264234288821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264234228821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 914885 + ... + 1168538.

It is an arithmetic number, because the mean of its divisors is an integer number (66059124768).

Almost surely, 2^264234288821 is an apocalyptic number.

It is an amenable number.

264234288821 is a deficient number, since it is larger than the sum of its proper divisors (2210251).

264234288821 is a wasteful number, since it uses less digits than its factorization.

264234288821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2210250.

The product of its digits is 2359296, while the sum is 50.

The spelling of 264234288821 in words is "two hundred sixty-four billion, two hundred thirty-four million, two hundred eighty-eight thousand, eight hundred twenty-one".