264709801650 has 144 divisors (see below), whose sum is σ = 768789187200. Its totient is φ = 60098774400.

The previous prime is 264709801591. The next prime is 264709801663. The reversal of 264709801650 is 56108907462.

It is a self number, because there is not a number n which added to its sum of digits gives 264709801650.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 974295 + ... + 1216005.

It is an arithmetic number, because the mean of its divisors is an integer number (5338813800).

Almost surely, 2^264709801650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 264709801650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (384394593600).

264709801650 is an abundant number, since it is smaller than the sum of its proper divisors (504079385550).

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

264709801650 is a wasteful number, since it uses less digits than its factorization.

264709801650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241889 (or 241877 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 264709801650 in words is "two hundred sixty-four billion, seven hundred nine million, eight hundred one thousand, six hundred fifty".