266391253248 has 36 divisors (see below), whose sum is σ = 708989222928. Its totient is φ = 88797084160.

The previous prime is 266391253229. The next prime is 266391253277. The reversal of 266391253248 is 842352193662.

It is a self number, because there is not a number n which added to its sum of digits gives 266391253248.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173431038 + ... + 173432573.

Almost surely, 2^266391253248 is an apocalyptic number.

It is an amenable number.

266391253248 is an abundant number, since it is smaller than the sum of its proper divisors (442597969680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266391253248 is an equidigital number, since it uses as much as digits as its factorization.

266391253248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346863630 (or 346863616 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 51.

The spelling of 266391253248 in words is "two hundred sixty-six billion, three hundred ninety-one million, two hundred fifty-three thousand, two hundred forty-eight".