2123653265611 has 8 divisors (see below), whose sum is σ = 2133059480784. Its totient is φ = 2114260162560.

The previous prime is 2123653265527. The next prime is 2123653265623. The reversal of 2123653265611 is 1165623563212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2123653265611 - 2⁹ = 2123653265099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123653265641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2953321 + ... + 3601306.

It is an arithmetic number, because the mean of its divisors is an integer number (266632435098).

Almost surely, 2^{2123653265611} is an apocalyptic number.

2123653265611 is a deficient number, since it is larger than the sum of its proper divisors (9406215173).

2123653265611 is a wasteful number, since it uses less digits than its factorization.

2123653265611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6556061.

The product of its digits is 388800, while the sum is 43.

The spelling of 2123653265611 in words is "two trillion, one hundred twenty-three billion, six hundred fifty-three million, two hundred sixty-five thousand, six hundred eleven".