51730690695 has 16 divisors (see below), whose sum is σ = 86367762432. Its totient is φ = 26390149280.

The previous prime is 51730690679. The next prime is 51730690747. The reversal of 51730690695 is 59609603715.

It is not a de Polignac number, because 51730690695 - 2⁴ = 51730690679 is a prime.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 74971671 + ... + 74972360.

It is an arithmetic number, because the mean of its divisors is an integer number (5397985152).

Almost surely, 2^51730690695 is an apocalyptic number.

51730690695 is a deficient number, since it is larger than the sum of its proper divisors (34637071737).

51730690695 is a wasteful number, since it uses less digits than its factorization.

51730690695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149944062.

The product of its (nonzero) digits is 1530900, while the sum is 51.

The spelling of 51730690695 in words is "fifty-one billion, seven hundred thirty million, six hundred ninety thousand, six hundred ninety-five".