8661101988 has 48 divisors (see below), whose sum is σ = 25195935744. Its totient is φ = 2249636640.

The previous prime is 8661101983. The next prime is 8661101989. The reversal of 8661101988 is 8891011668.

It is not an unprimeable number, because it can be changed into a prime (8661101983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4685820 + ... + 4687667.

It is an arithmetic number, because the mean of its divisors is an integer number (524915328).

Almost surely, 2^8661101988 is an apocalyptic number.

It is an amenable number.

8661101988 is an abundant number, since it is smaller than the sum of its proper divisors (16534833756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8661101988 is a wasteful number, since it uses less digits than its factorization.

8661101988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9373512 (or 9373510 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 48.

The square root of 8661101988 is about 93065.0417073995. The cubic root of 8661101988 is about 2053.6403283772.

The spelling of 8661101988 in words is "eight billion, six hundred sixty-one million, one hundred one thousand, nine hundred eighty-eight".