1266909198853 has 8 divisors (see below), whose sum is σ = 1269035570880. Its totient is φ = 1264784389440.

The previous prime is 1266909198839. The next prime is 1266909198859. The reversal of 1266909198853 is 3588919096621.

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 1266909198853 - 2⁹ = 1266909198341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266909198859) 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, 1237918 + ... + 2016496.

It is an arithmetic number, because the mean of its divisors is an integer number (158629446360).

Almost surely, 2^{1266909198853} is an apocalyptic number.

It is an amenable number.

1266909198853 is a deficient number, since it is larger than the sum of its proper divisors (2126372027).

1266909198853 is an equidigital number, since it uses as much as digits as its factorization.

1266909198853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781307.

The product of its (nonzero) digits is 50388480, while the sum is 67.

The spelling of 1266909198853 in words is "one trillion, two hundred sixty-six billion, nine hundred nine million, one hundred ninety-eight thousand, eight hundred fifty-three".