61803366822 has 64 divisors (see below), whose sum is σ = 145724313600. Its totient is φ = 19348675200.

The previous prime is 61803366811. The next prime is 61803366829. The reversal of 61803366822 is 22866330816.

It is a happy number.

61803366822 is a `hidden beast` number, since 618 + 0 + 3 + 3 + 6 + 6 + 8 + 22 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61803366829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 369447 + ... + 509997.

It is an arithmetic number, because the mean of its divisors is an integer number (2276942400).

Almost surely, 2^61803366822 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61803366822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72862156800).

61803366822 is an abundant number, since it is smaller than the sum of its proper divisors (83920946778).

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

61803366822 is a wasteful number, since it uses less digits than its factorization.

61803366822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141058 (or 141052 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 61803366822 in words is "sixty-one billion, eight hundred three million, three hundred sixty-six thousand, eight hundred twenty-two".