188860047081 has 4 divisors (see below), whose sum is σ = 251813396112. Its totient is φ = 125906698052.

The previous prime is 188860047071. The next prime is 188860047121. The reversal of 188860047081 is 180740068881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 188860047081 - 2⁵ = 188860047049 is a prime.

It is a super-2 number, since 2×188860047081² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (188860047041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31476674511 + ... + 31476674516.

It is an arithmetic number, because the mean of its divisors is an integer number (62953349028).

Almost surely, 2^188860047081 is an apocalyptic number.

It is an amenable number.

188860047081 is a deficient number, since it is larger than the sum of its proper divisors (62953349031).

188860047081 is an equidigital number, since it uses as much as digits as its factorization.

188860047081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62953349030.

The product of its (nonzero) digits is 688128, while the sum is 51.

The spelling of 188860047081 in words is "one hundred eighty-eight billion, eight hundred sixty million, forty-seven thousand, eighty-one".