9666436380 has 24 divisors (see below), whose sum is σ = 27066022032. Its totient is φ = 2577716352.

The previous prime is 9666436357. The next prime is 9666436411. The reversal of 9666436380 is 836346669.

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, 80553577 + ... + 80553696.

It is an arithmetic number, because the mean of its divisors is an integer number (1127750918).

Almost surely, 2^9666436380 is an apocalyptic number.

It is an amenable number.

9666436380 is an abundant number, since it is smaller than the sum of its proper divisors (17399585652).

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

9666436380 is a wasteful number, since it uses less digits than its factorization.

9666436380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161107285 (or 161107283 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 51.

The square root of 9666436380 is about 98318.0369006623. The cubic root of 9666436380 is about 2130.2085933827.

It can be divided in two parts, 966 and 6436380, that added together give a palindrome (6437346).

The spelling of 9666436380 in words is "nine billion, six hundred sixty-six million, four hundred thirty-six thousand, three hundred eighty".