1245166266244 has 12 divisors (see below), whose sum is σ = 2179233387100. Its totient is φ = 622528155648.

The previous prime is 1245166266221. The next prime is 1245166266269. The reversal of 1245166266244 is 4426626615421.

It can be written as a sum of positive squares in 2 ways, for example, as 512567219844 + 732599046400 = 715938^2 + 855920^2 .

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, 13693389 + ... + 13784020.

Almost surely, 2^{1245166266244} is an apocalyptic number.

It is an amenable number.

1245166266244 is a deficient number, since it is larger than the sum of its proper divisors (934067120856).

1245166266244 is a wasteful number, since it uses less digits than its factorization.

1245166266244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27488742 (or 27488740 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 49.

The spelling of 1245166266244 in words is "one trillion, two hundred forty-five billion, one hundred sixty-six million, two hundred sixty-six thousand, two hundred forty-four".