2126566652643 has 24 divisors (see below), whose sum is σ = 3102046403040. Its totient is φ = 1403713065600.

The previous prime is 2126566652557. The next prime is 2126566652699. The reversal of 2126566652643 is 3462566656212.

It is not a de Polignac number, because 2126566652643 - 2²⁸ = 2126298217187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2126566652643.

It is not an unprimeable number, because it can be changed into a prime (2126566652543) 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, 5467623 + ... + 5843631.

It is an arithmetic number, because the mean of its divisors is an integer number (129251933460).

Almost surely, 2^{2126566652643} is an apocalyptic number.

2126566652643 is a deficient number, since it is larger than the sum of its proper divisors (975479750397).

2126566652643 is a wasteful number, since it uses less digits than its factorization.

2126566652643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382219 (or 382216 counting only the distinct ones).

The product of its digits is 18662400, while the sum is 54.

The spelling of 2126566652643 in words is "two trillion, one hundred twenty-six billion, five hundred sixty-six million, six hundred fifty-two thousand, six hundred forty-three".