2546652206509 has 2 divisors, whose sum is σ = 2546652206510. Its totient is φ = 2546652206508.

The previous prime is 2546652206389. The next prime is 2546652206519. The reversal of 2546652206509 is 9056022566452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2338850248900 + 207801957609 = 1529330^2 + 455853^2 .

It is a cyclic number.

It is not a de Polignac number, because 2546652206509 - 2¹¹ = 2546652204461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2546652206519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1273326103254 + 1273326103255.

It is an arithmetic number, because the mean of its divisors is an integer number (1273326103255).

Almost surely, 2^{2546652206509} is an apocalyptic number.

It is an amenable number.

2546652206509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2546652206509 is an equidigital number, since it uses as much as digits as its factorization.

2546652206509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776000, while the sum is 52.

The spelling of 2546652206509 in words is "two trillion, five hundred forty-six billion, six hundred fifty-two million, two hundred six thousand, five hundred nine".