51784208679 has 16 divisors (see below), whose sum is σ = 80087022848. Its totient is φ = 29149319232.

The previous prime is 51784208653. The next prime is 51784208681. The reversal of 51784208679 is 97680248715.

It is not a de Polignac number, because 51784208679 - 2¹¹ = 51784206631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51784209679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18400942 + ... + 18403755.

It is an arithmetic number, because the mean of its divisors is an integer number (5005438928).

Almost surely, 2^51784208679 is an apocalyptic number.

51784208679 is a deficient number, since it is larger than the sum of its proper divisors (28302814169).

51784208679 is a wasteful number, since it uses less digits than its factorization.

51784208679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36804774.

The product of its (nonzero) digits is 6773760, while the sum is 57.

The spelling of 51784208679 in words is "fifty-one billion, seven hundred eighty-four million, two hundred eight thousand, six hundred seventy-nine".