4561265646 has 72 divisors (see below), whose sum is σ = 11610302184. Its totient is φ = 1290290400.

The previous prime is 4561265641. The next prime is 4561265659. The reversal of 4561265646 is 6465621654.

4561265646 is a `hidden beast` number, since 4 + 5 + 61 + 26 + 564 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4561265641) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 63481 + ... + 114683.

It is an arithmetic number, because the mean of its divisors is an integer number (161254197).

Almost surely, 2^4561265646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4561265646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5805151092).

4561265646 is an abundant number, since it is smaller than the sum of its proper divisors (7049036538).

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

4561265646 is a wasteful number, since it uses less digits than its factorization.

4561265646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51326 (or 51316 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 45.

The square root of 4561265646 is about 67537.1427142132. The cubic root of 4561265646 is about 1658.4222738681.

The spelling of 4561265646 in words is "four billion, five hundred sixty-one million, two hundred sixty-five thousand, six hundred forty-six".