51002512044 has 144 divisors (see below), whose sum is σ = 137581839360. Its totient is φ = 14673859200.

The previous prime is 51002512007. The next prime is 51002512087. The reversal of 51002512044 is 44021520015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2374947 + ... + 2396325.

It is an arithmetic number, because the mean of its divisors is an integer number (955429440).

Almost surely, 2^51002512044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51002512044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68790919680).

51002512044 is an abundant number, since it is smaller than the sum of its proper divisors (86579327316).

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

51002512044 is a wasteful number, since it uses less digits than its factorization.

51002512044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21492 (or 21479 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The spelling of 51002512044 in words is "fifty-one billion, two million, five hundred twelve thousand, forty-four".