266652631265664 has 128 divisors (see below), whose sum is σ = 809551863290880. Its totient is φ = 76179815608320.

The previous prime is 266652631265651. The next prime is 266652631265719. The reversal of 266652631265664 is 466562136256662.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×266652631265664² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 266652631265595 and 266652631265604.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 26510052 + ... + 35158044.

It is an arithmetic number, because the mean of its divisors is an integer number (6324623931960).

Almost surely, 2^{266652631265664} is an apocalyptic number.

266652631265664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

266652631265664 is an abundant number, since it is smaller than the sum of its proper divisors (542899232025216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266652631265664 is a wasteful number, since it uses less digits than its factorization.

266652631265664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8659488 (or 8659476 counting only the distinct ones).

The product of its digits is 671846400, while the sum is 66.

The spelling of 266652631265664 in words is "two hundred sixty-six trillion, six hundred fifty-two billion, six hundred thirty-one million, two hundred sixty-five thousand, six hundred sixty-four".