266722655020 has 48 divisors (see below), whose sum is σ = 565655021568. Its totient is φ = 105634676160.

The previous prime is 266722655011. The next prime is 266722655033. The reversal of 266722655020 is 20556227662.

It is a super-2 number, since 2×266722655020² (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 15 ways as a sum of consecutive naturals, for example, 23294937 + ... + 23306383.

It is an arithmetic number, because the mean of its divisors is an integer number (11784479616).

Almost surely, 2^266722655020 is an apocalyptic number.

266722655020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266722655020 is an abundant number, since it is smaller than the sum of its proper divisors (298932366548).

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

266722655020 is a wasteful number, since it uses less digits than its factorization.

266722655020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22870 (or 22868 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 266722655020 in words is "two hundred sixty-six billion, seven hundred twenty-two million, six hundred fifty-five thousand, twenty".