5151105115109 has 4 divisors (see below), whose sum is σ = 5151139197516. Its totient is φ = 5151071032704.

The previous prime is 5151105115087. The next prime is 5151105115133. The reversal of 5151105115109 is 9015115011515.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1345008465025 + 3806096650084 = 1159745^2 + 1950922^2 .

It is a cyclic number.

It is not a de Polignac number, because 5151105115109 - 2⁸ = 5151105114853 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5151105114109) 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, 16813484 + ... + 17117109.

It is an arithmetic number, because the mean of its divisors is an integer number (1287784799379).

Almost surely, 2^{5151105115109} is an apocalyptic number.

It is an amenable number.

5151105115109 is a deficient number, since it is larger than the sum of its proper divisors (34082407).

5151105115109 is a wasteful number, since it uses less digits than its factorization.

5151105115109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34082406.

The product of its (nonzero) digits is 5625, while the sum is 35.

The spelling of 5151105115109 in words is "five trillion, one hundred fifty-one billion, one hundred five million, one hundred fifteen thousand, one hundred nine".