12207765388 has 96 divisors (see below), whose sum is σ = 26925696000. Its totient is φ = 4714295040.

The previous prime is 12207765377. The next prime is 12207765391. The reversal of 12207765388 is 88356770221.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4069113 + ... + 4072111.

It is an arithmetic number, because the mean of its divisors is an integer number (280476000).

Almost surely, 2^12207765388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12207765388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13462848000).

12207765388 is an abundant number, since it is smaller than the sum of its proper divisors (14717930612).

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

12207765388 is a wasteful number, since it uses less digits than its factorization.

12207765388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3287 (or 3285 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 12207765388 in words is "twelve billion, two hundred seven million, seven hundred sixty-five thousand, three hundred eighty-eight".