1988129275199 has 2 divisors, whose sum is σ = 1988129275200. Its totient is φ = 1988129275198.

The previous prime is 1988129275133. The next prime is 1988129275211. The reversal of 1988129275199 is 9915729218891.

It is a strong prime.

It is an emirp because it is prime and its reverse (9915729218891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1988129275199 - 2¹² = 1988129271103 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1988129275399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 994064637599 + 994064637600.

It is an arithmetic number, because the mean of its divisors is an integer number (994064637600).

Almost surely, 2^{1988129275199} is an apocalyptic number.

1988129275199 is a deficient number, since it is larger than the sum of its proper divisors (1).

1988129275199 is an equidigital number, since it uses as much as digits as its factorization.

1988129275199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58786560, while the sum is 71.

The spelling of 1988129275199 in words is "one trillion, nine hundred eighty-eight billion, one hundred twenty-nine million, two hundred seventy-five thousand, one hundred ninety-nine".