266820020874 has 24 divisors (see below), whose sum is σ = 630665504352. Its totient is φ = 80854551720.

The previous prime is 266820020869. The next prime is 266820020891. The reversal of 266820020874 is 478020028662.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 673787734 + ... + 673788129.

It is an arithmetic number, because the mean of its divisors is an integer number (26277729348).

Almost surely, 2^266820020874 is an apocalyptic number.

266820020874 is an abundant number, since it is smaller than the sum of its proper divisors (363845483478).

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

266820020874 is a wasteful number, since it uses less digits than its factorization.

266820020874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347575882 (or 1347575879 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 266820020874 in words is "two hundred sixty-six billion, eight hundred twenty million, twenty thousand, eight hundred seventy-four".