51105135005 has 8 divisors (see below), whose sum is σ = 62983626072. Its totient is φ = 39779131968.

The previous prime is 51105135001. The next prime is 51105135017. The reversal of 51105135005 is 50053150115.

It can be written as a sum of positive squares in 4 ways, for example, as 21802884964 + 29302250041 = 147658^2 + 171179^2 .

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 51105135005 - 2² = 51105135001 is a prime.

It is a super-2 number, since 2×51105135005² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51105135001) 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, 138121802 + ... + 138122171.

It is an arithmetic number, because the mean of its divisors is an integer number (7872953259).

Almost surely, 2^51105135005 is an apocalyptic number.

It is an amenable number.

51105135005 is a deficient number, since it is larger than the sum of its proper divisors (11878491067).

51105135005 is a wasteful number, since it uses less digits than its factorization.

51105135005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276244015.

The product of its (nonzero) digits is 1875, while the sum is 26.

The spelling of 51105135005 in words is "fifty-one billion, one hundred five million, one hundred thirty-five thousand, five".