61818633260352 has 84 divisors (see below), whose sum is σ = 177601170544980. Its totient is φ = 20558621601792.

The previous prime is 61818633260327. The next prime is 61818633260381. The reversal of 61818633260352 is 25306233681816.

61818633260352 is a `hidden beast` number, since 6 + 18 + 18 + 6 + 3 + 3 + 2 + 603 + 5 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2963713743936 + 58854919516416 = 1721544^2 + 7671696^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123681327 + ... + 124180142.

It is an arithmetic number, because the mean of its divisors is an integer number (2114299649345).

Almost surely, 2^{61818633260352} is an apocalyptic number.

It is an amenable number.

61818633260352 is an abundant number, since it is smaller than the sum of its proper divisors (115782537284628).

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

61818633260352 is a wasteful number, since it uses less digits than its factorization.

61818633260352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247861920 (or 247861907 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 54.

The spelling of 61818633260352 in words is "sixty-one trillion, eight hundred eighteen billion, six hundred thirty-three million, two hundred sixty thousand, three hundred fifty-two".