266165430838 has 16 divisors (see below), whose sum is σ = 402418298880. Its totient is φ = 132026135976.

The previous prime is 266165430827. The next prime is 266165430887. The reversal of 266165430838 is 838034561662.

It is a super-2 number, since 2×266165430838² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5728183 + ... + 5774461.

It is an arithmetic number, because the mean of its divisors is an integer number (25151143680).

Almost surely, 2^266165430838 is an apocalyptic number.

266165430838 is a deficient number, since it is larger than the sum of its proper divisors (136252868042).

266165430838 is a wasteful number, since it uses less digits than its factorization.

266165430838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69051.

The product of its (nonzero) digits is 4976640, while the sum is 52.

The spelling of 266165430838 in words is "two hundred sixty-six billion, one hundred sixty-five million, four hundred thirty thousand, eight hundred thirty-eight".