12231949968 has 150 divisors (see below), whose sum is σ = 41183076726. Its totient is φ = 3494824704.

The previous prime is 12231949967. The next prime is 12231949987. The reversal of 12231949968 is 86994913221.

It can be written as a sum of positive squares in only one way, i.e., 11255512464 + 976437504 = 106092^2 + 31248^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (12231949967) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 32805 + ... + 159812.

Almost surely, 2^12231949968 is an apocalyptic number.

12231949968 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 12231949968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20591538363).

12231949968 is an abundant number, since it is smaller than the sum of its proper divisors (28951126758).

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

12231949968 is a wasteful number, since it uses less digits than its factorization.

12231949968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192651 (or 192629 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The spelling of 12231949968 in words is "twelve billion, two hundred thirty-one million, nine hundred forty-nine thousand, nine hundred sixty-eight".