53215343985 has 32 divisors (see below), whose sum is σ = 86063535360. Its totient is φ = 28076025600.

The previous prime is 53215343983. The next prime is 53215343999. The reversal of 53215343985 is 58934351235.

It is not a de Polignac number, because 53215343985 - 2¹ = 53215343983 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (53215343983) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1005895 + ... + 1057475.

It is an arithmetic number, because the mean of its divisors is an integer number (2689485480).

Almost surely, 2^53215343985 is an apocalyptic number.

It is an amenable number.

53215343985 is a deficient number, since it is larger than the sum of its proper divisors (32848191375).

53215343985 is a wasteful number, since it uses less digits than its factorization.

53215343985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52329.

The product of its digits is 1944000, while the sum is 48.

The spelling of 53215343985 in words is "fifty-three billion, two hundred fifteen million, three hundred forty-three thousand, nine hundred eighty-five".