2001066051266 has 4 divisors (see below), whose sum is σ = 3001599076902. Its totient is φ = 1000533025632.

The previous prime is 2001066051233. The next prime is 2001066051277. The reversal of 2001066051266 is 6621506601002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1217701215025 + 783364836241 = 1103495^2 + 885079^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500266512815 + ... + 500266512818.

Almost surely, 2^{2001066051266} is an apocalyptic number.

2001066051266 is a deficient number, since it is larger than the sum of its proper divisors (1000533025636).

2001066051266 is a wasteful number, since it uses less digits than its factorization.

2001066051266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000533025635.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 2001066051266 in words is "two trillion, one billion, sixty-six million, fifty-one thousand, two hundred sixty-six".