6640929177882 has 32 divisors (see below), whose sum is σ = 13740636934080. Its totient is φ = 2137188668160.

The previous prime is 6640929177863. The next prime is 6640929177887. The reversal of 6640929177882 is 2887719290466.

It is not an unprimeable number, because it can be changed into a prime (6640929177887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1997193 + ... + 4155795.

It is an arithmetic number, because the mean of its divisors is an integer number (429394904190).

Almost surely, 2^{6640929177882} is an apocalyptic number.

6640929177882 is an abundant number, since it is smaller than the sum of its proper divisors (7099707756198).

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

6640929177882 is a wasteful number, since it uses less digits than its factorization.

6640929177882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176318.

The product of its (nonzero) digits is 146313216, while the sum is 69.

The spelling of 6640929177882 in words is "six trillion, six hundred forty billion, nine hundred twenty-nine million, one hundred seventy-seven thousand, eight hundred eighty-two".