2123451810571 has 16 divisors (see below), whose sum is σ = 2751030688000. Its totient is φ = 1591667752608.

The previous prime is 2123451810497. The next prime is 2123451810577. The reversal of 2123451810571 is 1750181543212.

It is a cyclic number.

It is not a de Polignac number, because 2123451810571 - 2⁹ = 2123451810059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2123451810577) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 614067621 + ... + 614071078.

It is an arithmetic number, because the mean of its divisors is an integer number (171939418000).

Almost surely, 2^{2123451810571} is an apocalyptic number.

2123451810571 is a deficient number, since it is larger than the sum of its proper divisors (627578877429).

2123451810571 is a wasteful number, since it uses less digits than its factorization.

2123451810571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228138738.

The product of its (nonzero) digits is 67200, while the sum is 40.

The spelling of 2123451810571 in words is "two trillion, one hundred twenty-three billion, four hundred fifty-one million, eight hundred ten thousand, five hundred seventy-one".