11669697378 has 48 divisors (see below), whose sum is σ = 26256537216. Its totient is φ = 3884598000.

The previous prime is 11669697367. The next prime is 11669697407. The reversal of 11669697378 is 87379696611.

11669697378 is a `hidden beast` number, since 116 + 69 + 6 + 97 + 378 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 349000 + ... + 380972.

It is an arithmetic number, because the mean of its divisors is an integer number (547011192).

Almost surely, 2^11669697378 is an apocalyptic number.

11669697378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11669697378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13128268608).

11669697378 is an abundant number, since it is smaller than the sum of its proper divisors (14586839838).

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

11669697378 is an equidigital number, since it uses as much as digits as its factorization.

11669697378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32741 (or 32729 counting only the distinct ones).

The product of its digits is 20575296, while the sum is 63.

The spelling of 11669697378 in words is "eleven billion, six hundred sixty-nine million, six hundred ninety-seven thousand, three hundred seventy-eight".