51440330511133 has 4 divisors (see below), whose sum is σ = 51453104374240. Its totient is φ = 51427556648028.

The previous prime is 51440330511113. The next prime is 51440330511203. The reversal of 51440330511133 is 33111503304415.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51440330511133 is a prime.

It is a super-3 number, since 3×51440330511133³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51440330511113) 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, 6386925513 + ... + 6386933566.

It is an arithmetic number, because the mean of its divisors is an integer number (12863276093560).

Almost surely, 2^{51440330511133} is an apocalyptic number.

It is an amenable number.

51440330511133 is a deficient number, since it is larger than the sum of its proper divisors (12773863107).

51440330511133 is a wasteful number, since it uses less digits than its factorization.

51440330511133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12773863106.

The product of its (nonzero) digits is 32400, while the sum is 34.

Adding to 51440330511133 its reverse (33111503304415), we get a palindrome (84551833815548).

The spelling of 51440330511133 in words is "fifty-one trillion, four hundred forty billion, three hundred thirty million, five hundred eleven thousand, one hundred thirty-three".