51839586667 has 8 divisors (see below), whose sum is σ = 59878881072. Its totient is φ = 44354726400.

The previous prime is 51839586653. The next prime is 51839586709. The reversal of 51839586667 is 76668593815.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51839586667 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51839586599 and 51839586608.

It is not an unprimeable number, because it can be changed into a prime (51839586607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138608334 + ... + 138608707.

It is an arithmetic number, because the mean of its divisors is an integer number (7484860134).

Almost surely, 2^51839586667 is an apocalyptic number.

51839586667 is a deficient number, since it is larger than the sum of its proper divisors (8039294405).

51839586667 is a wasteful number, since it uses less digits than its factorization.

51839586667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277217069.

The product of its digits is 65318400, while the sum is 64.

The spelling of 51839586667 in words is "fifty-one billion, eight hundred thirty-nine million, five hundred eighty-six thousand, six hundred sixty-seven".