61560743051808 has 576 divisors, whose sum is σ = 235316081774592. Its totient is φ = 14743117117440.

The previous prime is 61560743051749. The next prime is 61560743051827. The reversal of 61560743051808 is 80815034706516.

It is a happy number.

61560743051808 is a `hidden beast` number, since 6 + 1 + 56 + 0 + 74 + 3 + 0 + 518 + 0 + 8 = 666.

61560743051808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 255591085 + ... + 255831827.

It is an arithmetic number, because the mean of its divisors is an integer number (408534864192).

Almost surely, 2^{61560743051808} 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 61560743051808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117658040887296).

61560743051808 is an abundant number, since it is smaller than the sum of its proper divisors (173755338722784).

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

61560743051808 is a wasteful number, since it uses less digits than its factorization.

61560743051808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241677 (or 241666 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 54.

The spelling of 61560743051808 in words is "sixty-one trillion, five hundred sixty billion, seven hundred forty-three million, fifty-one thousand, eight hundred eight".