51703683385 has 4 divisors (see below), whose sum is σ = 62044420068. Its totient is φ = 41362946704.

The previous prime is 51703683377. The next prime is 51703683391. The reversal of 51703683385 is 58338630715.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14341499536 + 37362183849 = 119756^2 + 193293^2 .

It is a cyclic number.

It is not a de Polignac number, because 51703683385 - 2³ = 51703683377 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5170368334 + ... + 5170368343.

It is an arithmetic number, because the mean of its divisors is an integer number (15511105017).

Almost surely, 2^51703683385 is an apocalyptic number.

It is an amenable number.

51703683385 is a deficient number, since it is larger than the sum of its proper divisors (10340736683).

51703683385 is a wasteful number, since it uses less digits than its factorization.

51703683385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10340736682.

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 51703683385 in words is "fifty-one billion, seven hundred three million, six hundred eighty-three thousand, three hundred eighty-five".