266697433988 has 12 divisors (see below), whose sum is σ = 491284746960. Its totient is φ = 126330363432.

The previous prime is 266697433963. The next prime is 266697433993. The reversal of 266697433988 is 889334796662.

266697433988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×266697433988² (a number of 24 digits) contains 22 as substring.

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, 1754588306 + ... + 1754588457.

It is an arithmetic number, because the mean of its divisors is an integer number (40940395580).

Almost surely, 2^266697433988 is an apocalyptic number.

It is an amenable number.

266697433988 is a deficient number, since it is larger than the sum of its proper divisors (224587312972).

266697433988 is a wasteful number, since it uses less digits than its factorization.

266697433988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3509176786 (or 3509176784 counting only the distinct ones).

The product of its digits is 564350976, while the sum is 71.

The spelling of 266697433988 in words is "two hundred sixty-six billion, six hundred ninety-seven million, four hundred thirty-three thousand, nine hundred eighty-eight".