61533725560 has 32 divisors (see below), whose sum is σ = 138462968160. Its totient is φ = 24611341696.

The previous prime is 61533725557. The next prime is 61533725563. The reversal of 61533725560 is 6552733516.

It is a happy number.

61533725560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61533725557) and next prime (61533725563).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61533725563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 445062 + ... + 566698.

It is an arithmetic number, because the mean of its divisors is an integer number (4326967755).

Almost surely, 2^61533725560 is an apocalyptic number.

It is an amenable number.

61533725560 is an abundant number, since it is smaller than the sum of its proper divisors (76929242600).

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

61533725560 is a wasteful number, since it uses less digits than its factorization.

61533725560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134295 (or 134291 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 43.

The spelling of 61533725560 in words is "sixty-one billion, five hundred thirty-three million, seven hundred twenty-five thousand, five hundred sixty".