51380750087 has 16 divisors (see below), whose sum is σ = 53336448000. Its totient is φ = 49437606624.

The previous prime is 51380750051. The next prime is 51380750191. The reversal of 51380750087 is 78005708315.

It is not a de Polignac number, because 51380750087 - 2¹⁸ = 51380487943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51380750587) by changing a digit.

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, 14040464 + ... + 14044122.

It is an arithmetic number, because the mean of its divisors is an integer number (3333528000).

Almost surely, 2^51380750087 is an apocalyptic number.

51380750087 is a deficient number, since it is larger than the sum of its proper divisors (1955697913).

51380750087 is a wasteful number, since it uses less digits than its factorization.

51380750087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5230.

The product of its (nonzero) digits is 235200, while the sum is 44.

The spelling of 51380750087 in words is "fifty-one billion, three hundred eighty million, seven hundred fifty thousand, eighty-seven".