1266145322979 has 8 divisors (see below), whose sum is σ = 1746407342160. Its totient is φ = 814990092896.

The previous prime is 1266145322969. The next prime is 1266145322983. The reversal of 1266145322979 is 9792235416621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1266145322979 - 2⁵ = 1266145322947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1266145322969) 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, 7276697172 + ... + 7276697345.

It is an arithmetic number, because the mean of its divisors is an integer number (218300917770).

Almost surely, 2^{1266145322979} is an apocalyptic number.

1266145322979 is a deficient number, since it is larger than the sum of its proper divisors (480262019181).

1266145322979 is a wasteful number, since it uses less digits than its factorization.

1266145322979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14553394549.

The product of its digits is 9797760, while the sum is 57.

The spelling of 1266145322979 in words is "one trillion, two hundred sixty-six billion, one hundred forty-five million, three hundred twenty-two thousand, nine hundred seventy-nine".