51140540435331 has 4 divisors (see below), whose sum is σ = 68187387247112. Its totient is φ = 34093693623552.

The previous prime is 51140540435323. The next prime is 51140540435353. The reversal of 51140540435331 is 13353404504115.

51140540435331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 51140540435331 - 2³ = 51140540435323 is a prime.

It is a super-2 number, since 2×51140540435331² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51140540435331.

It is not an unprimeable number, because it can be changed into a prime (51140540435731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8523423405886 + ... + 8523423405891.

It is an arithmetic number, because the mean of its divisors is an integer number (17046846811778).

Almost surely, 2^{51140540435331} is an apocalyptic number.

51140540435331 is a deficient number, since it is larger than the sum of its proper divisors (17046846811781).

51140540435331 is a wasteful number, since it uses less digits than its factorization.

51140540435331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17046846811780.

The product of its (nonzero) digits is 216000, while the sum is 39.

Adding to 51140540435331 its reverse (13353404504115), we get a palindrome (64493944939446).

The spelling of 51140540435331 in words is "fifty-one trillion, one hundred forty billion, five hundred forty million, four hundred thirty-five thousand, three hundred thirty-one".