10188988988081 has 2 divisors, whose sum is σ = 10188988988082. Its totient is φ = 10188988988080.

The previous prime is 10188988988077. The next prime is 10188988988119. The reversal of 10188988988081 is 18088988988101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7579339363600 + 2609649624481 = 2753060^2 + 1615441^2 .

It is a cyclic number.

It is not a de Polignac number, because 10188988988081 - 2² = 10188988988077 is a prime.

It is a super-2 number, since 2×10188988988081² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10188988987993 and 10188988988011.

It is not a weakly prime, because it can be changed into another prime (10188988988011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5094494494040 + 5094494494041.

It is an arithmetic number, because the mean of its divisors is an integer number (5094494494041).

Almost surely, 2^{10188988988081} is an apocalyptic number.

It is an amenable number.

10188988988081 is a deficient number, since it is larger than the sum of its proper divisors (1).

10188988988081 is an equidigital number, since it uses as much as digits as its factorization.

10188988988081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169869312, while the sum is 77.

The spelling of 10188988988081 in words is "ten trillion, one hundred eighty-eight billion, nine hundred eighty-eight million, nine hundred eighty-eight thousand, eighty-one".