2171305807628 has 12 divisors (see below), whose sum is σ = 3800620496400. Its totient is φ = 1085414237232.

The previous prime is 2171305807609. The next prime is 2171305807661. The reversal of 2171305807628 is 8267085031712.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59646176 + ... + 59682567.

It is an arithmetic number, because the mean of its divisors is an integer number (316718374700).

Almost surely, 2^{2171305807628} is an apocalyptic number.

It is an amenable number.

2171305807628 is a deficient number, since it is larger than the sum of its proper divisors (1629314688772).

2171305807628 is a wasteful number, since it uses less digits than its factorization.

2171305807628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119333296 (or 119333294 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 2171305807628 in words is "two trillion, one hundred seventy-one billion, three hundred five million, eight hundred seven thousand, six hundred twenty-eight".