1266610428208 has 10 divisors (see below), whose sum is σ = 2454057704684. Its totient is φ = 633305214096.

The previous prime is 1266610428199. The next prime is 1266610428263. The reversal of 1266610428208 is 8028240166621.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39581575866 + ... + 39581575897.

Almost surely, 2^{1266610428208} is an apocalyptic number.

It is an amenable number.

1266610428208 is a deficient number, since it is larger than the sum of its proper divisors (1187447276476).

1266610428208 is an equidigital number, since it uses as much as digits as its factorization.

1266610428208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79163151771 (or 79163151765 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 1266610428208 in words is "one trillion, two hundred sixty-six billion, six hundred ten million, four hundred twenty-eight thousand, two hundred eight".