12169650864 has 40 divisors (see below), whose sum is σ = 35929446400. Its totient is φ = 3477043008.

The previous prime is 12169650863. The next prime is 12169650901. The reversal of 12169650864 is 46805696121.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (12169650863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18109264 + ... + 18109935.

It is an arithmetic number, because the mean of its divisors is an integer number (898236160).

Almost surely, 2^12169650864 is an apocalyptic number.

12169650864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12169650864 is an abundant number, since it is smaller than the sum of its proper divisors (23759795536).

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

12169650864 is a wasteful number, since it uses less digits than its factorization.

12169650864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36219217 (or 36219211 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 12169650864 in words is "twelve billion, one hundred sixty-nine million, six hundred fifty thousand, eight hundred sixty-four".