51033585309 has 16 divisors (see below), whose sum is σ = 79352515200. Its totient is φ = 29162048160.

The previous prime is 51033585271. The next prime is 51033585373. The reversal of 51033585309 is 90358533015.

It is not a de Polignac number, because 51033585309 - 2⁷ = 51033585181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51033585709) 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, 24796632 + ... + 24798689.

It is an arithmetic number, because the mean of its divisors is an integer number (4959532200).

Almost surely, 2^51033585309 is an apocalyptic number.

It is an amenable number.

51033585309 is a deficient number, since it is larger than the sum of its proper divisors (28318929891).

51033585309 is an equidigital number, since it uses as much as digits as its factorization.

51033585309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49595345 (or 49595331 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 42.

The spelling of 51033585309 in words is "fifty-one billion, thirty-three million, five hundred eighty-five thousand, three hundred nine".