51000050105 has 8 divisors (see below), whose sum is σ = 61937410752. Its totient is φ = 40308473008.

The previous prime is 51000050081. The next prime is 51000050107. The reversal of 51000050105 is 50105000015.

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-51000050105 is a prime.

It is a super-2 number, since 2×51000050105² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51000050107) 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, 61445429 + ... + 61446258.

It is an arithmetic number, because the mean of its divisors is an integer number (7742176344).

Almost surely, 2^51000050105 is an apocalyptic number.

It is an amenable number.

51000050105 is a deficient number, since it is larger than the sum of its proper divisors (10937360647).

51000050105 is a wasteful number, since it uses less digits than its factorization.

51000050105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122891775.

The product of its (nonzero) digits is 125, while the sum is 17.

The spelling of 51000050105 in words is "fifty-one billion, fifty thousand, one hundred five".