51105958313 has 4 divisors (see below), whose sum is σ = 51391466640. Its totient is φ = 50820449988.

The previous prime is 51105958303. The next prime is 51105958357. The reversal of 51105958313 is 31385950115.

51105958313 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51105958313 - 2⁶ = 51105958249 is a prime.

It is a super-3 number, since 3×51105958313³ (a number of 33 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 Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51105958303) 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, 142753895 + ... + 142754252.

It is an arithmetic number, because the mean of its divisors is an integer number (12847866660).

Almost surely, 2^51105958313 is an apocalyptic number.

It is an amenable number.

51105958313 is a deficient number, since it is larger than the sum of its proper divisors (285508327).

51105958313 is a wasteful number, since it uses less digits than its factorization.

51105958313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285508326.

The product of its (nonzero) digits is 81000, while the sum is 41.

The spelling of 51105958313 in words is "fifty-one billion, one hundred five million, nine hundred fifty-eight thousand, three hundred thirteen".