53221863318 has 32 divisors (see below), whose sum is σ = 114648107616. Its totient is φ = 16373614848.

The previous prime is 53221863301. The next prime is 53221863341. The reversal of 53221863318 is 81336812235.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 53221863318.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 545980 + ... + 636032.

It is an arithmetic number, because the mean of its divisors is an integer number (3582753363).

Almost surely, 2^53221863318 is an apocalyptic number.

53221863318 is an abundant number, since it is smaller than the sum of its proper divisors (61426244298).

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

53221863318 is a wasteful number, since it uses less digits than its factorization.

53221863318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97648.

The product of its digits is 207360, while the sum is 42.

The spelling of 53221863318 in words is "fifty-three billion, two hundred twenty-one million, eight hundred sixty-three thousand, three hundred eighteen".