51027815107 has 4 divisors (see below), whose sum is σ = 51075819760. Its totient is φ = 50979810456.

The previous prime is 51027815089. The next prime is 51027815119. The reversal of 51027815107 is 70151872015.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51027815107 - 2¹¹ = 51027813059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51027815197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24000732 + ... + 24002857.

It is an arithmetic number, because the mean of its divisors is an integer number (12768954940).

Almost surely, 2^51027815107 is an apocalyptic number.

51027815107 is a deficient number, since it is larger than the sum of its proper divisors (48004653).

51027815107 is a wasteful number, since it uses less digits than its factorization.

51027815107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48004652.

The product of its (nonzero) digits is 19600, while the sum is 37.

The spelling of 51027815107 in words is "fifty-one billion, twenty-seven million, eight hundred fifteen thousand, one hundred seven".