2128670684571 has 24 divisors (see below), whose sum is σ = 2940196933440. Its totient is φ = 1369841070304.

The previous prime is 2128670684533. The next prime is 2128670684579. The reversal of 2128670684571 is 1754860768212.

It is not a de Polignac number, because 2128670684571 - 2⁶ = 2128670684507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2128670684579) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10340776 + ... + 10544618.

It is an arithmetic number, because the mean of its divisors is an integer number (122508205560).

Almost surely, 2^{2128670684571} is an apocalyptic number.

2128670684571 is a deficient number, since it is larger than the sum of its proper divisors (811526248869).

2128670684571 is a wasteful number, since it uses less digits than its factorization.

2128670684571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208043 (or 208014 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 57.

The spelling of 2128670684571 in words is "two trillion, one hundred twenty-eight billion, six hundred seventy million, six hundred eighty-four thousand, five hundred seventy-one".