2128694601599 has 2 divisors, whose sum is σ = 2128694601600. Its totient is φ = 2128694601598.

The previous prime is 2128694601497. The next prime is 2128694601637. The reversal of 2128694601599 is 9951064968212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2128694601599 - 2¹⁶ = 2128694536063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2128694603599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064347300799 + 1064347300800.

It is an arithmetic number, because the mean of its divisors is an integer number (1064347300800).

Almost surely, 2^{2128694601599} is an apocalyptic number.

2128694601599 is a deficient number, since it is larger than the sum of its proper divisors (1).

2128694601599 is an equidigital number, since it uses as much as digits as its factorization.

2128694601599 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16796160, while the sum is 62.

The spelling of 2128694601599 in words is "two trillion, one hundred twenty-eight billion, six hundred ninety-four million, six hundred one thousand, five hundred ninety-nine".