11669686380 has 576 divisors, whose sum is σ = 43815582720. Its totient is φ = 2477260800.

The previous prime is 11669686321. The next prime is 11669686381. The reversal of 11669686380 is 8368696611.

It is not an unprimeable number, because it can be changed into a prime (11669686381) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 45407212 + ... + 45407468.

It is an arithmetic number, because the mean of its divisors is an integer number (76068720).

Almost surely, 2^11669686380 is an apocalyptic number.

11669686380 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 11669686380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21907791360).

11669686380 is an abundant number, since it is smaller than the sum of its proper divisors (32145896340).

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

11669686380 is a wasteful number, since it uses less digits than its factorization.

11669686380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 11669686380 in words is "eleven billion, six hundred sixty-nine million, six hundred eighty-six thousand, three hundred eighty".