12001401432 has 48 divisors (see below), whose sum is σ = 32515507440. Its totient is φ = 3999025728.

The previous prime is 12001401421. The next prime is 12001401439. The reversal of 12001401432 is 23410410021.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001401439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181453 + ... + 238595.

It is an arithmetic number, because the mean of its divisors is an integer number (677406405).

Almost surely, 2^12001401432 is an apocalyptic number.

12001401432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12001401432 is an abundant number, since it is smaller than the sum of its proper divisors (20514106008).

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

12001401432 is a wasteful number, since it uses less digits than its factorization.

12001401432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60072 (or 60065 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12001401432 its reverse (23410410021), we get a palindrome (35411811453).

The spelling of 12001401432 in words is "twelve billion, one million, four hundred one thousand, four hundred thirty-two".