266894777087 has 4 divisors (see below), whose sum is σ = 267090880416. Its totient is φ = 266698673760.

The previous prime is 266894777063. The next prime is 266894777117. The reversal of 266894777087 is 780777498662.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 266894777087 - 2¹⁴ = 266894760703 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 266894777087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266896777087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98049623 + ... + 98052344.

It is an arithmetic number, because the mean of its divisors is an integer number (66772720104).

Almost surely, 2^266894777087 is an apocalyptic number.

266894777087 is a deficient number, since it is larger than the sum of its proper divisors (196103329).

266894777087 is a wasteful number, since it uses less digits than its factorization.

266894777087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196103328.

The product of its (nonzero) digits is 398297088, while the sum is 71.

The spelling of 266894777087 in words is "two hundred sixty-six billion, eight hundred ninety-four million, seven hundred seventy-seven thousand, eighty-seven".