5151554165509 has 2 divisors, whose sum is σ = 5151554165510. Its totient is φ = 5151554165508.

The previous prime is 5151554165503. The next prime is 5151554165599. The reversal of 5151554165509 is 9055614551515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3994090184484 + 1157463981025 = 1998522^2 + 1075855^2 .

It is a cyclic number.

It is not a de Polignac number, because 5151554165509 - 2²⁷ = 5151419947781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5151554165503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2575777082754 + 2575777082755.

It is an arithmetic number, because the mean of its divisors is an integer number (2575777082755).

Almost surely, 2^{5151554165509} is an apocalyptic number.

It is an amenable number.

5151554165509 is a deficient number, since it is larger than the sum of its proper divisors (1).

5151554165509 is an equidigital number, since it uses as much as digits as its factorization.

5151554165509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3375000, while the sum is 52.

The spelling of 5151554165509 in words is "five trillion, one hundred fifty-one billion, five hundred fifty-four million, one hundred sixty-five thousand, five hundred nine".