51005858871 has 32 divisors (see below), whose sum is σ = 74500897536. Its totient is φ = 30783456000.

The previous prime is 51005858867. The next prime is 51005858921. The reversal of 51005858871 is 17885850015.

It is not a de Polignac number, because 51005858871 - 2² = 51005858867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51005858871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51005858471) 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 31 ways as a sum of consecutive naturals, for example, 13817136 + ... + 13820826.

It is an arithmetic number, because the mean of its divisors is an integer number (2328153048).

Almost surely, 2^51005858871 is an apocalyptic number.

51005858871 is a deficient number, since it is larger than the sum of its proper divisors (23495038665).

51005858871 is a wasteful number, since it uses less digits than its factorization.

51005858871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5343.

The product of its (nonzero) digits is 448000, while the sum is 48.

The spelling of 51005858871 in words is "fifty-one billion, five million, eight hundred fifty-eight thousand, eight hundred seventy-one".