866511272384088 has 128 divisors (see below), whose sum is σ = 2196143484249600. Its totient is φ = 284883273593856.

The previous prime is 866511272384081. The next prime is 866511272384123. The reversal of 866511272384088 is 880483272115668.

It is a super-3 number, since 3×866511272384088³ (a number of 46 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866511272384081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1778554570 + ... + 1779041702.

It is an arithmetic number, because the mean of its divisors is an integer number (17157370970700).

Almost surely, 2^{866511272384088} is an apocalyptic number.

It is an amenable number.

866511272384088 is an abundant number, since it is smaller than the sum of its proper divisors (1329632211865512).

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

866511272384088 is a wasteful number, since it uses less digits than its factorization.

866511272384088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490761 (or 490757 counting only the distinct ones).

The product of its (nonzero) digits is 247726080, while the sum is 69.

The spelling of 866511272384088 in words is "eight hundred sixty-six trillion, five hundred eleven billion, two hundred seventy-two million, three hundred eighty-four thousand, eighty-eight".