12538099392 has 448 divisors, whose sum is σ = 43423027200. Its totient is φ = 3100446720.

The previous prime is 12538099363. The next prime is 12538099433. The reversal of 12538099392 is 29399083521.

It is a tau number, because it is divible by the number of its divisors (448).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59422167 + ... + 59422377.

It is an arithmetic number, because the mean of its divisors is an integer number (96926400).

Almost surely, 2^12538099392 is an apocalyptic number.

12538099392 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 12538099392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21711513600).

12538099392 is an abundant number, since it is smaller than the sum of its proper divisors (30884927808).

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

12538099392 is a wasteful number, since it uses less digits than its factorization.

12538099392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 434 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 51.

The spelling of 12538099392 in words is "twelve billion, five hundred thirty-eight million, ninety-nine thousand, three hundred ninety-two".