188093412681 has 32 divisors (see below), whose sum is σ = 279626780160. Its totient is φ = 111764987136.

The previous prime is 188093412679. The next prime is 188093412697. The reversal of 188093412681 is 186214390881.

It is not a de Polignac number, because 188093412681 - 2¹ = 188093412679 is a prime.

It is a super-2 number, since 2×188093412681² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (188093422681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2587230 + ... + 2658936.

It is an arithmetic number, because the mean of its divisors is an integer number (8738336880).

Almost surely, 2^188093412681 is an apocalyptic number.

It is an amenable number.

188093412681 is a deficient number, since it is larger than the sum of its proper divisors (91533367479).

188093412681 is a wasteful number, since it uses less digits than its factorization.

188093412681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74453.

The product of its (nonzero) digits is 663552, while the sum is 51.

The spelling of 188093412681 in words is "one hundred eighty-eight billion, ninety-three million, four hundred twelve thousand, six hundred eighty-one".