12389611400 has 24 divisors (see below), whose sum is σ = 28805846970. Its totient is φ = 4955844480.

The previous prime is 12389611397. The next prime is 12389611463. The reversal of 12389611400 is 411698321.

It can be written as a sum of positive squares in 3 ways, for example, as 12064386244 + 325225156 = 109838^2 + 18034^2 .

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, 30973829 + ... + 30974228.

Almost surely, 2^12389611400 is an apocalyptic number.

12389611400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12389611400 is an abundant number, since it is smaller than the sum of its proper divisors (16416235570).

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

12389611400 is a wasteful number, since it uses less digits than its factorization.

12389611400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61948073 (or 61948064 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 12389611400 in words is "twelve billion, three hundred eighty-nine million, six hundred eleven thousand, four hundred".