12989188400 has 30 divisors (see below), whose sum is σ = 31206526092. Its totient is φ = 5195675200.

The previous prime is 12989188397. The next prime is 12989188411. The reversal of 12989188400 is 488198921.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16236086 + ... + 16236885.

Almost surely, 2^12989188400 is an apocalyptic number.

12989188400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12989188400 is an abundant number, since it is smaller than the sum of its proper divisors (18217337692).

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

12989188400 is a wasteful number, since it uses less digits than its factorization.

12989188400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32472989 (or 32472978 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 50.

The spelling of 12989188400 in words is "twelve billion, nine hundred eighty-nine million, one hundred eighty-eight thousand, four hundred".