51508605472 has 48 divisors (see below), whose sum is σ = 103608046080. Its totient is φ = 25195906048.

The previous prime is 51508605437. The next prime is 51508605479. The reversal of 51508605472 is 27450680515.

It is not an unprimeable number, because it can be changed into a prime (51508605479) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4640313 + ... + 4651399.

It is an arithmetic number, because the mean of its divisors is an integer number (2158500960).

Almost surely, 2^51508605472 is an apocalyptic number.

It is an amenable number.

51508605472 is an abundant number, since it is smaller than the sum of its proper divisors (52099440608).

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

51508605472 is a wasteful number, since it uses less digits than its factorization.

51508605472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14233 (or 14225 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 43.

The spelling of 51508605472 in words is "fifty-one billion, five hundred eight million, six hundred five thousand, four hundred seventy-two".