51284649232 has 40 divisors (see below), whose sum is σ = 100217335680. Its totient is φ = 25422483840.

The previous prime is 51284649167. The next prime is 51284649239. The reversal of 51284649232 is 23294648215.

It is not an unprimeable number, because it can be changed into a prime (51284649239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2313433 + ... + 2335495.

It is an arithmetic number, because the mean of its divisors is an integer number (2505433392).

Almost surely, 2^51284649232 is an apocalyptic number.

It is an amenable number.

51284649232 is a deficient number, since it is larger than the sum of its proper divisors (48932686448).

51284649232 is a wasteful number, since it uses less digits than its factorization.

51284649232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23311 (or 23305 counting only the distinct ones).

The product of its digits is 829440, while the sum is 46.

The spelling of 51284649232 in words is "fifty-one billion, two hundred eighty-four million, six hundred forty-nine thousand, two hundred thirty-two".