51000323205 has 32 divisors (see below), whose sum is σ = 87888358656. Its totient is φ = 25104743424.

The previous prime is 51000323201. The next prime is 51000323233. The reversal of 51000323205 is 50232300015.

It is not a de Polignac number, because 51000323205 - 2² = 51000323201 is a prime.

It is a super-2 number, since 2×51000323205² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51000323201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3008784 + ... + 3025686.

It is an arithmetic number, because the mean of its divisors is an integer number (2746511208).

Almost surely, 2^51000323205 is an apocalyptic number.

It is an amenable number.

51000323205 is a deficient number, since it is larger than the sum of its proper divisors (36888035451).

51000323205 is a wasteful number, since it uses less digits than its factorization.

51000323205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32397.

The product of its (nonzero) digits is 900, while the sum is 21.

The spelling of 51000323205 in words is "fifty-one billion, three hundred twenty-three thousand, two hundred five".