53311330255561 has 16 divisors (see below), whose sum is σ = 61379675568000. Its totient is φ = 45356530526208.

The previous prime is 53311330255553. The next prime is 53311330255571. The reversal of 53311330255561 is 16555203311335.

It is a cyclic number.

It is not a de Polignac number, because 53311330255561 - 2³ = 53311330255553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53311330255511) 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, 16668615 + ... + 19607788.

It is an arithmetic number, because the mean of its divisors is an integer number (3836229723000).

Almost surely, 2^{53311330255561} is an apocalyptic number.

It is an amenable number.

53311330255561 is a deficient number, since it is larger than the sum of its proper divisors (8068345312439).

53311330255561 is a wasteful number, since it uses less digits than its factorization.

53311330255561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36277968.

The product of its (nonzero) digits is 607500, while the sum is 43.

Adding to 53311330255561 its reverse (16555203311335), we get a palindrome (69866533566896).

The spelling of 53311330255561 in words is "fifty-three trillion, three hundred eleven billion, three hundred thirty million, two hundred fifty-five thousand, five hundred sixty-one".