1266097743979 has 8 divisors (see below), whose sum is σ = 1313507148800. Its totient is φ = 1219098810600.

The previous prime is 1266097743941. The next prime is 1266097743991. The reversal of 1266097743979 is 9793477906621.

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 1266097743979 - 2¹⁵ = 1266097711211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1266097749979) 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, 102611577 + ... + 102623914.

It is an arithmetic number, because the mean of its divisors is an integer number (164188393600).

Almost surely, 2^{1266097743979} is an apocalyptic number.

1266097743979 is a deficient number, since it is larger than the sum of its proper divisors (47409404821).

1266097743979 is a wasteful number, since it uses less digits than its factorization.

1266097743979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205235721.

The product of its (nonzero) digits is 216040608, while the sum is 70.

The spelling of 1266097743979 in words is "one trillion, two hundred sixty-six billion, ninety-seven million, seven hundred forty-three thousand, nine hundred seventy-nine".