266640850853 has 8 divisors (see below), whose sum is σ = 287155776096. Its totient is φ = 246126510000.

The previous prime is 266640850849. The next prime is 266640850877. The reversal of 266640850853 is 358058046662.

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 266640850853 - 2² = 266640850849 is a prime.

It is a super-2 number, since 2×266640850853² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 266640850795 and 266640850804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266640850153) 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, 1436798 + ... + 1611728.

It is an arithmetic number, because the mean of its divisors is an integer number (35894472012).

Almost surely, 2^266640850853 is an apocalyptic number.

It is an amenable number.

266640850853 is a deficient number, since it is larger than the sum of its proper divisors (20514925243).

266640850853 is a wasteful number, since it uses less digits than its factorization.

266640850853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292195.

The product of its (nonzero) digits is 8294400, while the sum is 53.

The spelling of 266640850853 in words is "two hundred sixty-six billion, six hundred forty million, eight hundred fifty thousand, eight hundred fifty-three".