12385747400 has 96 divisors (see below), whose sum is σ = 31768669800. Its totient is φ = 4461619200.

The previous prime is 12385747399. The next prime is 12385747453. The reversal of 12385747400 is 474758321.

It can be written as a sum of positive squares in 12 ways, for example, as 2106626404 + 10279120996 = 45898^2 + 101386^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48506 + ... + 164694.

Almost surely, 2^12385747400 is an apocalyptic number.

12385747400 is a gapful number since it is divisible by the number (10) 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 12385747400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15884334900).

12385747400 is an abundant number, since it is smaller than the sum of its proper divisors (19382922400).

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

12385747400 is a wasteful number, since it uses less digits than its factorization.

12385747400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116259 (or 116250 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 41.

The spelling of 12385747400 in words is "twelve billion, three hundred eighty-five million, seven hundred forty-seven thousand, four hundred".