2661422898523 has 2 divisors, whose sum is σ = 2661422898524. Its totient is φ = 2661422898522.

The previous prime is 2661422898487. The next prime is 2661422898527. The reversal of 2661422898523 is 3258982241662.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2661422898523 is a prime.

It is not a weakly prime, because it can be changed into another prime (2661422898527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330711449261 + 1330711449262.

It is an arithmetic number, because the mean of its divisors is an integer number (1330711449262).

Almost surely, 2^{2661422898523} is an apocalyptic number.

2661422898523 is a deficient number, since it is larger than the sum of its proper divisors (1).

2661422898523 is an equidigital number, since it uses as much as digits as its factorization.

2661422898523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19906560, while the sum is 58.

The spelling of 2661422898523 in words is "two trillion, six hundred sixty-one billion, four hundred twenty-two million, eight hundred ninety-eight thousand, five hundred twenty-three".