53440436441063 has 4 divisors (see below), whose sum is σ = 61074784504080. Its totient is φ = 45806088378048.

The previous prime is 53440436441033. The next prime is 53440436441083. The reversal of 53440436441063 is 36014463404435.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53440436441063 - 2¹² = 53440436436967 is a prime.

It is a super-2 number, since 2×53440436441063² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53440436440999 and 53440436441017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53440436441003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3817174031498 + ... + 3817174031511.

It is an arithmetic number, because the mean of its divisors is an integer number (15268696126020).

Almost surely, 2^{53440436441063} is an apocalyptic number.

53440436441063 is a deficient number, since it is larger than the sum of its proper divisors (7634348063017).

53440436441063 is an equidigital number, since it uses as much as digits as its factorization.

53440436441063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7634348063016.

The product of its (nonzero) digits is 4976640, while the sum is 47.

Adding to 53440436441063 its reverse (36014463404435), we get a palindrome (89454899845498).

The spelling of 53440436441063 in words is "fifty-three trillion, four hundred forty billion, four hundred thirty-six million, four hundred forty-one thousand, sixty-three".