2123522564 has 48 divisors (see below), whose sum is σ = 4247510400. Its totient is φ = 922876416.

The previous prime is 2123522561. The next prime is 2123522573. The reversal of 2123522564 is 4652253212.

It is a self number, because there is not a number n which added to its sum of digits gives 2123522564.

It is not an unprimeable number, because it can be changed into a prime (2123522561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21947 + ... + 68765.

It is an arithmetic number, because the mean of its divisors is an integer number (88489800).

Almost surely, 2^2123522564 is an apocalyptic number.

It is an amenable number.

2123522564 is an abundant number, since it is smaller than the sum of its proper divisors (2123987836).

2123522564 is a wasteful number, since it uses less digits than its factorization.

2123522564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46892 (or 46890 counting only the distinct ones).

The product of its digits is 28800, while the sum is 32.

The square root of 2123522564 is about 46081.6944566929. The cubic root of 2123522564 is about 1285.3427729964.

Adding to 2123522564 its reverse (4652253212), we get a palindrome (6775775776).

The spelling of 2123522564 in words is "two billion, one hundred twenty-three million, five hundred twenty-two thousand, five hundred sixty-four".