51350823839 has 16 divisors (see below), whose sum is σ = 59609152512. Its totient is φ = 43325523648.

The previous prime is 51350823791. The next prime is 51350823847. The reversal of 51350823839 is 93832805315.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51350823839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51350823793 and 51350823802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51350823439) 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, 157142 + ... + 356924.

It is an arithmetic number, because the mean of its divisors is an integer number (3725572032).

Almost surely, 2^51350823839 is an apocalyptic number.

51350823839 is a deficient number, since it is larger than the sum of its proper divisors (8258328673).

51350823839 is a wasteful number, since it uses less digits than its factorization.

51350823839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200366.

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 51350823839 in words is "fifty-one billion, three hundred fifty million, eight hundred twenty-three thousand, eight hundred thirty-nine".