51205228893 has 64 divisors (see below), whose sum is σ = 98279731200. Its totient is φ = 25587783360.

The previous prime is 51205228891. The next prime is 51205228903. The reversal of 51205228893 is 39882250215.

51205228893 is a `hidden beast` number, since 512 + 0 + 52 + 2 + 8 + 89 + 3 = 666.

It is not a de Polignac number, because 51205228893 - 2¹ = 51205228891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51205228891) 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 63 ways as a sum of consecutive naturals, for example, 501753 + ... + 595118.

It is an arithmetic number, because the mean of its divisors is an integer number (1535620800).

Almost surely, 2^51205228893 is an apocalyptic number.

It is an amenable number.

51205228893 is a deficient number, since it is larger than the sum of its proper divisors (47074502307).

51205228893 is a wasteful number, since it uses less digits than its factorization.

51205228893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096919 (or 1096913 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 51205228893 in words is "fifty-one billion, two hundred five million, two hundred twenty-eight thousand, eight hundred ninety-three".