51905404833 has 16 divisors (see below), whose sum is σ = 70558226496. Its totient is φ = 33928930880.

The previous prime is 51905404777. The next prime is 51905404843. The reversal of 51905404833 is 33840450915.

It is a cyclic number.

It is not a de Polignac number, because 51905404833 - 2³³ = 43315470241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51905404843) 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 15 ways as a sum of consecutive naturals, for example, 145891 + ... + 353687.

It is an arithmetic number, because the mean of its divisors is an integer number (4409889156).

Almost surely, 2^51905404833 is an apocalyptic number.

51905404833 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

51905404833 is a deficient number, since it is larger than the sum of its proper divisors (18652821663).

51905404833 is a wasteful number, since it uses less digits than its factorization.

51905404833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209424.

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 51905404833 in words is "fifty-one billion, nine hundred five million, four hundred four thousand, eight hundred thirty-three".