2664020660808 has 64 divisors (see below), whose sum is σ = 7339162501440. Its totient is φ = 800635901184.

The previous prime is 2664020660767. The next prime is 2664020660809. The reversal of 2664020660808 is 8080660204662.

It is not an unprimeable number, because it can be changed into a prime (2664020660809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99271791 + ... + 99298622.

It is an arithmetic number, because the mean of its divisors is an integer number (114674414085).

Almost surely, 2^{2664020660808} is an apocalyptic number.

It is an amenable number.

2664020660808 is an abundant number, since it is smaller than the sum of its proper divisors (4675141840632).

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

2664020660808 is a wasteful number, since it uses less digits than its factorization.

2664020660808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198570478 (or 198570474 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 48.

The spelling of 2664020660808 in words is "two trillion, six hundred sixty-four billion, twenty million, six hundred sixty thousand, eight hundred eight".