1266012206015 has 16 divisors (see below), whose sum is σ = 1548079322400. Its totient is φ = 993571592832.

The previous prime is 1266012206009. The next prime is 1266012206027. The reversal of 1266012206015 is 5106022106621.

It is a cyclic number.

It is not a de Polignac number, because 1266012206015 - 2¹⁰ = 1266012204991 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1769576 + ... + 2379794.

It is an arithmetic number, because the mean of its divisors is an integer number (96754957650).

Almost surely, 2^{1266012206015} is an apocalyptic number.

1266012206015 is a deficient number, since it is larger than the sum of its proper divisors (282067116385).

1266012206015 is an equidigital number, since it uses as much as digits as its factorization.

1266012206015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618106.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 1266012206015 in words is "one trillion, two hundred sixty-six billion, twelve million, two hundred six thousand, fifteen".