51212651002460 has 48 divisors (see below), whose sum is σ = 115125674025600. Its totient is φ = 19077968821824.

The previous prime is 51212651002367. The next prime is 51212651002523. The reversal of 51212651002460 is 6420015621215.

It is a self number, because there is not a number n which added to its sum of digits gives 51212651002460.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1142097362 + ... + 1142142201.

It is an arithmetic number, because the mean of its divisors is an integer number (2398451542200).

Almost surely, 2^{51212651002460} is an apocalyptic number.

It is an amenable number.

51212651002460 is an abundant number, since it is smaller than the sum of its proper divisors (63913023023140).

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

51212651002460 is a wasteful number, since it uses less digits than its factorization.

51212651002460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2284239650 (or 2284239648 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

Adding to 51212651002460 its reverse (6420015621215), we get a palindrome (57632666623675).

The spelling of 51212651002460 in words is "fifty-one trillion, two hundred twelve billion, six hundred fifty-one million, two thousand, four hundred sixty".