1306501642266 has 16 divisors (see below), whose sum is σ = 2618721021504. Its totient is φ = 434547591264.

The previous prime is 1306501642261. The next prime is 1306501642343. The reversal of 1306501642266 is 6622461056031.

It is a super-2 number, since 2×1306501642266² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1306501642261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238236070 + ... + 238241553.

It is an arithmetic number, because the mean of its divisors is an integer number (163670063844).

Almost surely, 2^{1306501642266} is an apocalyptic number.

1306501642266 is an abundant number, since it is smaller than the sum of its proper divisors (1312219379238).

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

1306501642266 is a wasteful number, since it uses less digits than its factorization.

1306501642266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476478085.

The product of its (nonzero) digits is 311040, while the sum is 42.

Adding to 1306501642266 its reverse (6622461056031), we get a palindrome (7928962698297).

The spelling of 1306501642266 in words is "one trillion, three hundred six billion, five hundred one million, six hundred forty-two thousand, two hundred sixty-six".