51110005129 has 8 divisors (see below), whose sum is σ = 51172386120. Its totient is φ = 51047665536.

The previous prime is 51110005127. The next prime is 51110005201. The reversal of 51110005129 is 92150001115.

It is a happy number.

51110005129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 559227904 + 50550777225 = 23648^2 + 224835^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 51110005129 - 2¹ = 51110005127 is a prime.

It is a super-2 number, since 2×51110005129² (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 (51110005123) 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, 2953069 + ... + 2970325.

It is an arithmetic number, because the mean of its divisors is an integer number (6396548265).

Almost surely, 2^51110005129 is an apocalyptic number.

It is an amenable number.

51110005129 is a deficient number, since it is larger than the sum of its proper divisors (62380991).

51110005129 is a wasteful number, since it uses less digits than its factorization.

51110005129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20699.

The product of its (nonzero) digits is 450, while the sum is 25.

The spelling of 51110005129 in words is "fifty-one billion, one hundred ten million, five thousand, one hundred twenty-nine".