266244400858 has 8 divisors (see below), whose sum is σ = 403853866740. Its totient is φ = 131626445280.

The previous prime is 266244400841. The next prime is 266244400883. The reversal of 266244400858 is 858004442662.

266244400858 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 239852124009 + 26392276849 = 489747^2 + 162457^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×266244400858² (a number of 24 digits) contains 22 as substring.

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, 747877353 + ... + 747877708.

Almost surely, 2^266244400858 is an apocalyptic number.

266244400858 is a deficient number, since it is larger than the sum of its proper divisors (137609465882).

266244400858 is a wasteful number, since it uses less digits than its factorization.

266244400858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495755152.

The product of its (nonzero) digits is 2949120, while the sum is 49.

The spelling of 266244400858 in words is "two hundred sixty-six billion, two hundred forty-four million, four hundred thousand, eight hundred fifty-eight".