61325636472 has 96 divisors (see below), whose sum is σ = 169731132480. Its totient is φ = 19994323200.

The previous prime is 61325636417. The next prime is 61325636479. The reversal of 61325636472 is 27463652316.

61325636472 is a `hidden beast` number, since 6 + 1 + 3 + 2 + 5 + 636 + 4 + 7 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61325636479) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6428218 + ... + 6437750.

It is an arithmetic number, because the mean of its divisors is an integer number (1768032630).

Almost surely, 2^61325636472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61325636472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84865566240).

61325636472 is an abundant number, since it is smaller than the sum of its proper divisors (108405496008).

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

61325636472 is a wasteful number, since it uses less digits than its factorization.

61325636472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11493 (or 11486 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 45.

The spelling of 61325636472 in words is "sixty-one billion, three hundred twenty-five million, six hundred thirty-six thousand, four hundred seventy-two".