8132661880 has 32 divisors (see below), whose sum is σ = 20912559840. Its totient is φ = 2788341120.

The previous prime is 8132661877. The next prime is 8132661881. The reversal of 8132661880 is 881662318.

It is a super-2 number, since 2×8132661880² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8132661881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14522331 + ... + 14522890.

It is an arithmetic number, because the mean of its divisors is an integer number (653517495).

Almost surely, 2^8132661880 is an apocalyptic number.

It is an amenable number.

8132661880 is an abundant number, since it is smaller than the sum of its proper divisors (12779897960).

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

8132661880 is a wasteful number, since it uses less digits than its factorization.

8132661880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29045239 (or 29045235 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 8132661880 is about 90181.2723352249. The cubic root of 8132661880 is about 2010.9946052409.

The spelling of 8132661880 in words is "eight billion, one hundred thirty-two million, six hundred sixty-one thousand, eight hundred eighty".