16010510516509 has 2 divisors, whose sum is σ = 16010510516510. Its totient is φ = 16010510516508.

The previous prime is 16010510516501. The next prime is 16010510516603. The reversal of 16010510516509 is 90561501501061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13497026868900 + 2513483647609 = 3673830^2 + 1585397^2 .

It is a cyclic number.

It is not a de Polignac number, because 16010510516509 - 2³ = 16010510516501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16010510516501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8005255258254 + 8005255258255.

It is an arithmetic number, because the mean of its divisors is an integer number (8005255258255).

Almost surely, 2^{16010510516509} is an apocalyptic number.

It is an amenable number.

16010510516509 is a deficient number, since it is larger than the sum of its proper divisors (1).

16010510516509 is an equidigital number, since it uses as much as digits as its factorization.

16010510516509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40500, while the sum is 40.

The spelling of 16010510516509 in words is "sixteen trillion, ten billion, five hundred ten million, five hundred sixteen thousand, five hundred nine".