51240521304 has 96 divisors (see below), whose sum is σ = 167931148320. Its totient is φ = 13778961408.

The previous prime is 51240521257. The next prime is 51240521327. The reversal of 51240521304 is 40312504215.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2981659 + ... + 2998794.

It is an arithmetic number, because the mean of its divisors is an integer number (1749282795).

Almost surely, 2^51240521304 is an apocalyptic number.

It is an amenable number.

51240521304 is an abundant number, since it is smaller than the sum of its proper divisors (116690627016).

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

51240521304 is a wasteful number, since it uses less digits than its factorization.

51240521304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5980489 (or 5980482 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 51240521304 in words is "fifty-one billion, two hundred forty million, five hundred twenty-one thousand, three hundred four".