264884421560 has 128 divisors (see below), whose sum is σ = 680340418560. Its totient is φ = 91937203200.

The previous prime is 264884421511. The next prime is 264884421667. The reversal of 264884421560 is 65124488462.

It is a junction number, because it is equal to n+sod(n) for n = 264884421499 and 264884421508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 862709 + ... + 1128731.

It is an arithmetic number, because the mean of its divisors is an integer number (5315159520).

Almost surely, 2^264884421560 is an apocalyptic number.

264884421560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 264884421560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340170209280).

264884421560 is an abundant number, since it is smaller than the sum of its proper divisors (415455997000).

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

264884421560 is a wasteful number, since it uses less digits than its factorization.

264884421560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266149 (or 266145 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 50.

The spelling of 264884421560 in words is "two hundred sixty-four billion, eight hundred eighty-four million, four hundred twenty-one thousand, five hundred sixty".