264163887889 has 4 divisors (see below), whose sum is σ = 288178786800. Its totient is φ = 240148988980.

The previous prime is 264163887853. The next prime is 264163887917. The reversal of 264163887889 is 988788361462.

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 264163887889 - 2¹³ = 264163879697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264163887839) 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, 12007449439 + ... + 12007449460.

It is an arithmetic number, because the mean of its divisors is an integer number (72044696700).

Almost surely, 2^264163887889 is an apocalyptic number.

It is an amenable number.

264163887889 is a deficient number, since it is larger than the sum of its proper divisors (24014898911).

264163887889 is a wasteful number, since it uses less digits than its factorization.

264163887889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24014898910.

The product of its digits is 222953472, while the sum is 70.

The spelling of 264163887889 in words is "two hundred sixty-four billion, one hundred sixty-three million, eight hundred eighty-seven thousand, eight hundred eighty-nine".