12451989792 has 96 divisors (see below), whose sum is σ = 35692151040. Its totient is φ = 3769713920.

The previous prime is 12451989773. The next prime is 12451989799. The reversal of 12451989792 is 29798915421.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (12451989799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1223059 + ... + 1233197.

It is an arithmetic number, because the mean of its divisors is an integer number (371793240).

Almost surely, 2^12451989792 is an apocalyptic number.

12451989792 is a gapful number since it is divisible by the number (12) 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 12451989792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17846075520).

12451989792 is an abundant number, since it is smaller than the sum of its proper divisors (23240161248).

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

12451989792 is a wasteful number, since it uses less digits than its factorization.

12451989792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11326 (or 11318 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 57.

The spelling of 12451989792 in words is "twelve billion, four hundred fifty-one million, nine hundred eighty-nine thousand, seven hundred ninety-two".