53318785433 has 16 divisors (see below), whose sum is σ = 54689746176. Its totient is φ = 51967319040.

The previous prime is 53318785423. The next prime is 53318785463. The reversal of 53318785433 is 33458781335.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 53318785433 - 2²² = 53314591129 is a prime.

It is a super-3 number, since 3×53318785433³ (a number of 33 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53318785423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3654473 + ... + 3669033.

It is an arithmetic number, because the mean of its divisors is an integer number (3418109136).

Almost surely, 2^53318785433 is an apocalyptic number.

It is an amenable number.

53318785433 is a deficient number, since it is larger than the sum of its proper divisors (1370960743).

53318785433 is a wasteful number, since it uses less digits than its factorization.

53318785433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15224.

The product of its digits is 3628800, while the sum is 50.

The spelling of 53318785433 in words is "fifty-three billion, three hundred eighteen million, seven hundred eighty-five thousand, four hundred thirty-three".