266655039072 has 48 divisors (see below), whose sum is σ = 700170408000. Its totient is φ = 88859498112.

The previous prime is 266655039029. The next prime is 266655039103. The reversal of 266655039072 is 270930556662.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×266655039072² (a number of 24 digits) contains 22 as substring.

It is a nialpdrome in base 14.

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, 61018 + ... + 732825.

It is an arithmetic number, because the mean of its divisors is an integer number (14586883500).

Almost surely, 2^266655039072 is an apocalyptic number.

It is an amenable number.

266655039072 is an abundant number, since it is smaller than the sum of its proper divisors (433515368928).

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

266655039072 is a wasteful number, since it uses less digits than its factorization.

266655039072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797355 (or 797347 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 51.

The spelling of 266655039072 in words is "two hundred sixty-six billion, six hundred fifty-five million, thirty-nine thousand, seventy-two".