266996473787 has 8 divisors (see below), whose sum is σ = 275636979072. Its totient is φ = 258357700800.

The previous prime is 266996473771. The next prime is 266996473847. The reversal of 266996473787 is 787374699662.

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 266996473787 - 2⁴ = 266996473771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266996473187) 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, 116138 + ... + 739919.

It is an arithmetic number, because the mean of its divisors is an integer number (34454622384).

Almost surely, 2^266996473787 is an apocalyptic number.

266996473787 is a deficient number, since it is larger than the sum of its proper divisors (8640505285).

266996473787 is a wasteful number, since it uses less digits than its factorization.

266996473787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866149.

The product of its digits is 1152216576, while the sum is 74.

The spelling of 266996473787 in words is "two hundred sixty-six billion, nine hundred ninety-six million, four hundred seventy-three thousand, seven hundred eighty-seven".