265650631420066 has 16 divisors (see below), whose sum is σ = 398952073281600. Its totient is φ = 132666623519760.

The previous prime is 265650631420049. The next prime is 265650631420067. The reversal of 265650631420066 is 660024136056562.

It is a junction number, because it is equal to n+sod(n) for n = 265650631419995 and 265650631420022.

It is not an unprimeable number, because it can be changed into a prime (265650631420067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28100635 + ... + 36344833.

It is an arithmetic number, because the mean of its divisors is an integer number (24934504580100).

Almost surely, 2^{265650631420066} is an apocalyptic number.

265650631420066 is a deficient number, since it is larger than the sum of its proper divisors (133301441861534).

265650631420066 is a wasteful number, since it uses less digits than its factorization.

265650631420066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8263449.

The product of its (nonzero) digits is 9331200, while the sum is 52.

The spelling of 265650631420066 in words is "two hundred sixty-five trillion, six hundred fifty billion, six hundred thirty-one million, four hundred twenty thousand, sixty-six".