51428983185 has 128 divisors (see below), whose sum is σ = 99295787520. Its totient is φ = 25159680000.

The previous prime is 51428983171. The next prime is 51428983201. The reversal of 51428983185 is 58138982415.

51428983185 is a `hidden beast` number, since 51 + 428 + 98 + 3 + 1 + 85 = 666.

It is not a de Polignac number, because 51428983185 - 2⁸ = 51428982929 is a prime.

It is a super-2 number, since 2×51428983185² (a number of 22 digits) contains 22 as substring.

Its product of digits (2764800) is a multiple of the sum of its prime factors (3456).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 15817810 + ... + 15821060.

It is an arithmetic number, because the mean of its divisors is an integer number (775748340).

Almost surely, 2^51428983185 is an apocalyptic number.

It is an amenable number.

51428983185 is a deficient number, since it is larger than the sum of its proper divisors (47866804335).

51428983185 is a wasteful number, since it uses less digits than its factorization.

51428983185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3456 (or 3450 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 54.

The spelling of 51428983185 in words is "fifty-one billion, four hundred twenty-eight million, nine hundred eighty-three thousand, one hundred eighty-five".