11897666080 has 96 divisors (see below), whose sum is σ = 29225387520. Its totient is φ = 4572149760.

The previous prime is 11897666059. The next prime is 11897666083. The reversal of 11897666080 is 8066679811.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11897666083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 680812 + ... + 698068.

It is an arithmetic number, because the mean of its divisors is an integer number (304431120).

Almost surely, 2^11897666080 is an apocalyptic number.

11897666080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11897666080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14612693760).

11897666080 is an abundant number, since it is smaller than the sum of its proper divisors (17327721440).

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

11897666080 is a wasteful number, since it uses less digits than its factorization.

11897666080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17442 (or 17434 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 52.

The spelling of 11897666080 in words is "eleven billion, eight hundred ninety-seven million, six hundred sixty-six thousand, eighty".