51171155046 has 24 divisors (see below), whose sum is σ = 120950003304. Its totient is φ = 15506410560.

The previous prime is 51171155041. The next prime is 51171155047. The reversal of 51171155046 is 64055117115.

51171155046 is a `hidden beast` number, since 51 + 1 + 7 + 11 + 550 + 46 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 51171155046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51171155041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129219891 + ... + 129220286.

It is an arithmetic number, because the mean of its divisors is an integer number (5039583471).

Almost surely, 2^51171155046 is an apocalyptic number.

51171155046 is an abundant number, since it is smaller than the sum of its proper divisors (69778848258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51171155046 is a wasteful number, since it uses less digits than its factorization.

51171155046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258440196 (or 258440193 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 36.

The spelling of 51171155046 in words is "fifty-one billion, one hundred seventy-one million, one hundred fifty-five thousand, forty-six".