266664440407014 has 96 divisors (see below), whose sum is σ = 623393261487360. Its totient is φ = 81895508001216.

The previous prime is 266664440407007. The next prime is 266664440407021. The reversal of 266664440407014 is 410704044466662.

It is an interprime number because it is at equal distance from previous prime (266664440407007) and next prime (266664440407021).

It is a super-2 number, since 2×266664440407014² (a number of 30 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 47 ways as a sum of consecutive naturals, for example, 2411299029 + ... + 2411409615.

It is an arithmetic number, because the mean of its divisors is an integer number (6493679807160).

Almost surely, 2^{266664440407014} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266664440407014, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311696630743680).

266664440407014 is an abundant number, since it is smaller than the sum of its proper divisors (356728821080346).

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

266664440407014 is a wasteful number, since it uses less digits than its factorization.

266664440407014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129994 (or 129991 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 54.

The spelling of 266664440407014 in words is "two hundred sixty-six trillion, six hundred sixty-four billion, four hundred forty million, four hundred seven thousand, fourteen".