2545643102279 has 2 divisors, whose sum is σ = 2545643102280. Its totient is φ = 2545643102278.

The previous prime is 2545643102269. The next prime is 2545643102291. The reversal of 2545643102279 is 9722013465452.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2545643102279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2545643102239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272821551139 + 1272821551140.

It is an arithmetic number, because the mean of its divisors is an integer number (1272821551140).

Almost surely, 2^{2545643102279} is an apocalyptic number.

2545643102279 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545643102279 is an equidigital number, since it uses as much as digits as its factorization.

2545643102279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3628800, while the sum is 50.

The spelling of 2545643102279 in words is "two trillion, five hundred forty-five billion, six hundred forty-three million, one hundred two thousand, two hundred seventy-nine".