51688026806 has 8 divisors (see below), whose sum is σ = 83496043344. Its totient is φ = 23856012360.

The previous prime is 51688026791. The next prime is 51688026811. The reversal of 51688026806 is 60862088615.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 994000490 + ... + 994000541.

It is an arithmetic number, because the mean of its divisors is an integer number (10437005418).

Almost surely, 2^51688026806 is an apocalyptic number.

51688026806 is a deficient number, since it is larger than the sum of its proper divisors (31808016538).

51688026806 is a wasteful number, since it uses less digits than its factorization.

51688026806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988001046.

The product of its (nonzero) digits is 1105920, while the sum is 50.

The spelling of 51688026806 in words is "fifty-one billion, six hundred eighty-eight million, twenty-six thousand, eight hundred six".