264563173428 has 12 divisors (see below), whose sum is σ = 617314071360. Its totient is φ = 88187724472.

The previous prime is 264563173423. The next prime is 264563173439. The reversal of 264563173428 is 824371365462.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264563173423) 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, 11023465548 + ... + 11023465571.

It is an arithmetic number, because the mean of its divisors is an integer number (51442839280).

Almost surely, 2^264563173428 is an apocalyptic number.

It is an amenable number.

264563173428 is an abundant number, since it is smaller than the sum of its proper divisors (352750897932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

264563173428 is a wasteful number, since it uses less digits than its factorization.

264563173428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22046931126 (or 22046931124 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 51.

The spelling of 264563173428 in words is "two hundred sixty-four billion, five hundred sixty-three million, one hundred seventy-three thousand, four hundred twenty-eight".