188488980561 has 12 divisors (see below), whose sum is σ = 292350255792. Its totient is φ = 107707988808.

The previous prime is 188488980529. The next prime is 188488980571. The reversal of 188488980561 is 165089884881.

It is not a de Polignac number, because 188488980561 - 2⁵ = 188488980529 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 188488980492 and 188488980501.

It is not an unprimeable number, because it can be changed into a prime (188488980571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 641118835 + ... + 641119128.

It is an arithmetic number, because the mean of its divisors is an integer number (24362521316).

Almost surely, 2^188488980561 is an apocalyptic number.

It is an amenable number.

188488980561 is a deficient number, since it is larger than the sum of its proper divisors (103861275231).

188488980561 is a wasteful number, since it uses less digits than its factorization.

188488980561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282237980 (or 1282237973 counting only the distinct ones).

The product of its (nonzero) digits is 35389440, while the sum is 66.

The spelling of 188488980561 in words is "one hundred eighty-eight billion, four hundred eighty-eight million, nine hundred eighty thousand, five hundred sixty-one".