51671144685 has 8 divisors (see below), whose sum is σ = 82673831520. Its totient is φ = 27557943824.

The previous prime is 51671144669. The next prime is 51671144711. The reversal of 51671144685 is 58644117615.

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

It is a cyclic number.

It is not a de Polignac number, because 51671144685 - 2⁴ = 51671144669 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 1722371475 + ... + 1722371504.

It is an arithmetic number, because the mean of its divisors is an integer number (10334228940).

Almost surely, 2^51671144685 is an apocalyptic number.

It is an amenable number.

51671144685 is a deficient number, since it is larger than the sum of its proper divisors (31002686835).

51671144685 is a wasteful number, since it uses less digits than its factorization.

51671144685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3444742987.

The product of its digits is 806400, while the sum is 48.

The spelling of 51671144685 in words is "fifty-one billion, six hundred seventy-one million, one hundred forty-four thousand, six hundred eighty-five".