266026464260 has 24 divisors (see below), whose sum is σ = 558723482520. Its totient is φ = 106397650944.

The previous prime is 266026464259. The next prime is 266026464311. The reversal of 266026464260 is 62464620662.

It can be written as a sum of positive squares in 4 ways, for example, as 87996476164 + 178029988096 = 296642^2 + 421936^2 .

It is a super-3 number, since 3×266026464260³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638909 + ... + 969668.

It is an arithmetic number, because the mean of its divisors is an integer number (23280145105).

Almost surely, 2^266026464260 is an apocalyptic number.

266026464260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266026464260 is an abundant number, since it is smaller than the sum of its proper divisors (292697018260).

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

266026464260 is a wasteful number, since it uses less digits than its factorization.

266026464260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616855 (or 1616853 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 44.

The spelling of 266026464260 in words is "two hundred sixty-six billion, twenty-six million, four hundred sixty-four thousand, two hundred sixty".