188990101011101 has 4 divisors (see below), whose sum is σ = 203527801088892. Its totient is φ = 174452400933312.

The previous prime is 188990101011077. The next prime is 188990101011161. The reversal of 188990101011101 is 101110101099881.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47117941791001 + 141872159220100 = 6864251^2 + 11911010^2 .

It is a cyclic number.

It is not a de Polignac number, because 188990101011101 - 2¹⁸ = 188990100748957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188990101011161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7268850038876 + ... + 7268850038901.

It is an arithmetic number, because the mean of its divisors is an integer number (50881950272223).

Almost surely, 2^{188990101011101} is an apocalyptic number.

It is an amenable number.

188990101011101 is a deficient number, since it is larger than the sum of its proper divisors (14537700077791).

188990101011101 is a wasteful number, since it uses less digits than its factorization.

188990101011101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14537700077790.

The product of its (nonzero) digits is 5184, while the sum is 41.

The spelling of 188990101011101 in words is "one hundred eighty-eight trillion, nine hundred ninety billion, one hundred one million, eleven thousand, one hundred one".