53193720366 has 24 divisors (see below), whose sum is σ = 118368009864. Its totient is φ = 17252017200.

The previous prime is 53193720343. The next prime is 53193720401. The reversal of 53193720366 is 66302739135.

53193720366 is a `hidden beast` number, since 531 + 9 + 37 + 20 + 3 + 66 = 666.

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 11 ways as a sum of consecutive naturals, for example, 39934560 + ... + 39935891.

It is an arithmetic number, because the mean of its divisors is an integer number (4932000411).

Almost surely, 2^53193720366 is an apocalyptic number.

53193720366 is an abundant number, since it is smaller than the sum of its proper divisors (65174289498).

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

53193720366 is a wasteful number, since it uses less digits than its factorization.

53193720366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79870496 (or 79870493 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 45.

The spelling of 53193720366 in words is "fifty-three billion, one hundred ninety-three million, seven hundred twenty thousand, three hundred sixty-six".