12165653088 has 216 divisors, whose sum is σ = 36534941352. Its totient is φ = 3981809664.

The previous prime is 12165653081. The next prime is 12165653099. The reversal of 12165653088 is 88035656121.

12165653088 is a `hidden beast` number, since 1 + 2 + 1 + 6 + 565 + 3 + 0 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (216).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12165653081) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 95792481 + ... + 95792607.

It is an arithmetic number, because the mean of its divisors is an integer number (169143247).

Almost surely, 2^12165653088 is an apocalyptic number.

12165653088 is a gapful number since it is divisible by the number (18) 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 12165653088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18267470676).

12165653088 is an abundant number, since it is smaller than the sum of its proper divisors (24369288264).

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

12165653088 is an frugal number, since it uses more digits than its factorization.

12165653088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 12165653088 in words is "twelve billion, one hundred sixty-five million, six hundred fifty-three thousand, eighty-eight".