266771889849 has 8 divisors (see below), whose sum is σ = 365309254720. Its totient is φ = 173041225776.

The previous prime is 266771889841. The next prime is 266771889859. The reversal of 266771889849 is 948988177662.

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

It is not a de Polignac number, because 266771889849 - 2³ = 266771889841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266771889841) 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, 1201675069 + ... + 1201675290.

It is an arithmetic number, because the mean of its divisors is an integer number (45663656840).

Almost surely, 2^266771889849 is an apocalyptic number.

It is an amenable number.

266771889849 is a deficient number, since it is larger than the sum of its proper divisors (98537364871).

266771889849 is a wasteful number, since it uses less digits than its factorization.

266771889849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2403350399.

The product of its digits is 585252864, while the sum is 75.

The spelling of 266771889849 in words is "two hundred sixty-six billion, seven hundred seventy-one million, eight hundred eighty-nine thousand, eight hundred forty-nine".