51181404504 has 64 divisors (see below), whose sum is σ = 128692800000. Its totient is φ = 16962126720.

The previous prime is 51181404473. The next prime is 51181404523. The reversal of 51181404504 is 40540418115.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3784747 + ... + 3798245.

It is an arithmetic number, because the mean of its divisors is an integer number (2010825000).

Almost surely, 2^51181404504 is an apocalyptic number.

It is an amenable number.

51181404504 is an abundant number, since it is smaller than the sum of its proper divisors (77511395496).

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

51181404504 is a wasteful number, since it uses less digits than its factorization.

51181404504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14408 (or 14404 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 33.

The spelling of 51181404504 in words is "fifty-one billion, one hundred eighty-one million, four hundred four thousand, five hundred four".