51002671894 has 8 divisors (see below), whose sum is σ = 77800686120. Its totient is φ = 25069109856.

The previous prime is 51002671891. The next prime is 51002671901. The reversal of 51002671894 is 49817620015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 51002671894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51002671891) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 216112899 + ... + 216113134.

It is an arithmetic number, because the mean of its divisors is an integer number (9725085765).

Almost surely, 2^51002671894 is an apocalyptic number.

51002671894 is a deficient number, since it is larger than the sum of its proper divisors (26798014226).

51002671894 is a wasteful number, since it uses less digits than its factorization.

51002671894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432226094.

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 51002671894 in words is "fifty-one billion, two million, six hundred seventy-one thousand, eight hundred ninety-four".