2305005521564 has 48 divisors (see below), whose sum is σ = 4355077557600. Its totient is φ = 1063464124416.

The previous prime is 2305005521549. The next prime is 2305005521569. The reversal of 2305005521564 is 4651255005032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2305005521569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 726332 + ... + 2266620.

It is an arithmetic number, because the mean of its divisors is an integer number (90730782450).

Almost surely, 2^{2305005521564} is an apocalyptic number.

It is an amenable number.

2305005521564 is a deficient number, since it is larger than the sum of its proper divisors (2050072036036).

2305005521564 is a wasteful number, since it uses less digits than its factorization.

2305005521564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540742 (or 1540740 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 38.

The spelling of 2305005521564 in words is "two trillion, three hundred five billion, five million, five hundred twenty-one thousand, five hundred sixty-four".