51138346193 has 8 divisors (see below), whose sum is σ = 56974250880. Its totient is φ = 45500268880.

The previous prime is 51138346141. The next prime is 51138346213. The reversal of 51138346193 is 39164383115.

51138346193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-51138346193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51138340193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49456298 + ... + 49457331.

It is an arithmetic number, because the mean of its divisors is an integer number (7121781360).

Almost surely, 2^51138346193 is an apocalyptic number.

It is an amenable number.

51138346193 is a deficient number, since it is larger than the sum of its proper divisors (5835904687).

51138346193 is a wasteful number, since it uses less digits than its factorization.

51138346193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98913687.

The product of its digits is 233280, while the sum is 44.

The spelling of 51138346193 in words is "fifty-one billion, one hundred thirty-eight million, three hundred forty-six thousand, one hundred ninety-three".