53318321287 has 32 divisors (see below), whose sum is σ = 68796864000. Its totient is φ = 40096694400.

The previous prime is 53318321281. The next prime is 53318321327. The reversal of 53318321287 is 78212381335.

It is a happy number.

It is not a de Polignac number, because 53318321287 - 2¹⁹ = 53317796999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53318321281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7724964 + ... + 7731862.

It is an arithmetic number, because the mean of its divisors is an integer number (2149902000).

Almost surely, 2^53318321287 is an apocalyptic number.

53318321287 is a deficient number, since it is larger than the sum of its proper divisors (15478542713).

53318321287 is a wasteful number, since it uses less digits than its factorization.

53318321287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10407.

The product of its digits is 241920, while the sum is 43.

The spelling of 53318321287 in words is "fifty-three billion, three hundred eighteen million, three hundred twenty-one thousand, two hundred eighty-seven".