652144638164 has 24 divisors (see below), whose sum is σ = 1142404556328. Its totient is φ = 325743436800.

The previous prime is 652144638163. The next prime is 652144638191. The reversal of 652144638164 is 461836441256.

It can be written as a sum of positive squares in 4 ways, for example, as 18700562500 + 633444075664 = 136750^2 + 795892^2 .

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652144638163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44559392 + ... + 44574024.

It is an arithmetic number, because the mean of its divisors is an integer number (47600189847).

Almost surely, 2^652144638164 is an apocalyptic number.

It is an amenable number.

652144638164 is a deficient number, since it is larger than the sum of its proper divisors (490259918164).

652144638164 is a wasteful number, since it uses less digits than its factorization.

652144638164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25115 (or 25113 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 50.

The spelling of 652144638164 in words is "six hundred fifty-two billion, one hundred forty-four million, six hundred thirty-eight thousand, one hundred sixty-four".