266256641353 has 32 divisors (see below), whose sum is σ = 284245378560. Its totient is φ = 248862620160.

The previous prime is 266256641347. The next prime is 266256641363. The reversal of 266256641353 is 353146652662.

It is not a de Polignac number, because 266256641353 - 2²¹ = 266254544201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 266256641297 and 266256641306.

It is not an unprimeable number, because it can be changed into a prime (266256641333) 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 31 ways as a sum of consecutive naturals, for example, 275342476 + ... + 275343442.

It is an arithmetic number, because the mean of its divisors is an integer number (8882668080).

Almost surely, 2^266256641353 is an apocalyptic number.

266256641353 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

266256641353 is a deficient number, since it is larger than the sum of its proper divisors (17988737207).

266256641353 is a wasteful number, since it uses less digits than its factorization.

266256641353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137.

The product of its digits is 4665600, while the sum is 49.

The spelling of 266256641353 in words is "two hundred sixty-six billion, two hundred fifty-six million, six hundred forty-one thousand, three hundred fifty-three".