51585586566 has 8 divisors (see below), whose sum is σ = 103171173144. Its totient is φ = 17195195520.

The previous prime is 51585586531. The next prime is 51585586579. The reversal of 51585586566 is 66568558515.

It is a happy number.

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

51585586566 is an admirable number.

It is a super-2 number, since 2×51585586566² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4298798875 + ... + 4298798886.

It is an arithmetic number, because the mean of its divisors is an integer number (12896396643).

Almost surely, 2^51585586566 is an apocalyptic number.

51585586566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51585586566 is a wasteful number, since it uses less digits than its factorization.

51585586566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8597597766.

The product of its digits is 43200000, while the sum is 60.

The spelling of 51585586566 in words is "fifty-one billion, five hundred eighty-five million, five hundred eighty-six thousand, five hundred sixty-six".