266153456322643 has 4 divisors (see below), whose sum is σ = 266153687322120. Its totient is φ = 266153225323168.

The previous prime is 266153456322623. The next prime is 266153456322709. The reversal of 266153456322643 is 346223654351662.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266153456322643 is a prime.

It is a super-2 number, since 2×266153456322643² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266153456322623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113762758 + ... + 116078731.

It is an arithmetic number, because the mean of its divisors is an integer number (66538421830530).

Almost surely, 2^{266153456322643} is an apocalyptic number.

266153456322643 is a deficient number, since it is larger than the sum of its proper divisors (230999477).

266153456322643 is a wasteful number, since it uses less digits than its factorization.

266153456322643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230999476.

The product of its digits is 111974400, while the sum is 58.

The spelling of 266153456322643 in words is "two hundred sixty-six trillion, one hundred fifty-three billion, four hundred fifty-six million, three hundred twenty-two thousand, six hundred forty-three".