266377916265 has 16 divisors (see below), whose sum is σ = 432565931328. Its totient is φ = 139947800256.

The previous prime is 266377916261. The next prime is 266377916303. The reversal of 266377916265 is 562619773662.

It is not a de Polignac number, because 266377916265 - 2² = 266377916261 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 266377916199 and 266377916208.

It is not an unprimeable number, because it can be changed into a prime (266377916261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132525322 + ... + 132527331.

It is an arithmetic number, because the mean of its divisors is an integer number (27035370708).

Almost surely, 2^266377916265 is an apocalyptic number.

It is an amenable number.

266377916265 is a deficient number, since it is larger than the sum of its proper divisors (166188015063).

266377916265 is a wasteful number, since it uses less digits than its factorization.

266377916265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265052728.

The product of its digits is 34292160, while the sum is 60.

The spelling of 266377916265 in words is "two hundred sixty-six billion, three hundred seventy-seven million, nine hundred sixteen thousand, two hundred sixty-five".