51086535867213 has 24 divisors (see below), whose sum is σ = 86439556052640. Its totient is φ = 26538460189920.

The previous prime is 51086535867209. The next prime is 51086535867259. The reversal of 51086535867213 is 31276853568015.

It is not a de Polignac number, because 51086535867213 - 2² = 51086535867209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51086535867313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15796700878 + ... + 15796704111.

It is an arithmetic number, because the mean of its divisors is an integer number (3601648168860).

Almost surely, 2^{51086535867213} is an apocalyptic number.

It is an amenable number.

51086535867213 is a deficient number, since it is larger than the sum of its proper divisors (35353020185427).

51086535867213 is a wasteful number, since it uses less digits than its factorization.

51086535867213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31593405017 (or 31593405010 counting only the distinct ones).

The product of its (nonzero) digits is 36288000, while the sum is 60.

The spelling of 51086535867213 in words is "fifty-one trillion, eighty-six billion, five hundred thirty-five million, eight hundred sixty-seven thousand, two hundred thirteen".