266133201653 has 4 divisors (see below), whose sum is σ = 290327129088. Its totient is φ = 241939274220.

The previous prime is 266133201611. The next prime is 266133201671. The reversal of 266133201653 is 356102331662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 266133201653 - 2²⁴ = 266116424437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266133201683) 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, 12096963701 + ... + 12096963722.

It is an arithmetic number, because the mean of its divisors is an integer number (72581782272).

Almost surely, 2^266133201653 is an apocalyptic number.

It is an amenable number.

266133201653 is a deficient number, since it is larger than the sum of its proper divisors (24193927435).

266133201653 is a wasteful number, since it uses less digits than its factorization.

266133201653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24193927434.

The product of its (nonzero) digits is 116640, while the sum is 38.

The spelling of 266133201653 in words is "two hundred sixty-six billion, one hundred thirty-three million, two hundred one thousand, six hundred fifty-three".