15401249112 has 128 divisors (see below), whose sum is σ = 40749984000. Its totient is φ = 4844302848.

The previous prime is 15401249099. The next prime is 15401249113. The reversal of 15401249112 is 21194210451.

It is a self number, because there is not a number n which added to its sum of digits gives 15401249112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15401249113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5688063 + ... + 5690769.

It is an arithmetic number, because the mean of its divisors is an integer number (318359250).

Almost surely, 2^15401249112 is an apocalyptic number.

15401249112 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 15401249112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20374992000).

15401249112 is an abundant number, since it is smaller than the sum of its proper divisors (25348734888).

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

15401249112 is a wasteful number, since it uses less digits than its factorization.

15401249112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2945 (or 2941 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

Adding to 15401249112 its reverse (21194210451), we get a palindrome (36595459563).

The spelling of 15401249112 in words is "fifteen billion, four hundred one million, two hundred forty-nine thousand, one hundred twelve".