266120420928 has 28 divisors (see below), whose sum is σ = 704110280880. Its totient is φ = 88706806912.

The previous prime is 266120420887. The next prime is 266120420939. The reversal of 266120420928 is 829024021662.

266120420928 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 266120420928.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 693021738 + ... + 693022121.

Almost surely, 2^266120420928 is an apocalyptic number.

It is an amenable number.

266120420928 is an abundant number, since it is smaller than the sum of its proper divisors (437989859952).

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

266120420928 is a wasteful number, since it uses less digits than its factorization.

266120420928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386043874 (or 1386043864 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The spelling of 266120420928 in words is "two hundred sixty-six billion, one hundred twenty million, four hundred twenty thousand, nine hundred twenty-eight".