15402152112 has 80 divisors (see below), whose sum is σ = 40795210368. Its totient is φ = 5004679680.

The previous prime is 15402152111. The next prime is 15402152173. The reversal of 15402152112 is 21125120451.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (15402152111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1068183 + ... + 1082505.

Almost surely, 2^15402152112 is an apocalyptic number.

15402152112 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 15402152112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20397605184).

15402152112 is an abundant number, since it is smaller than the sum of its proper divisors (25393058256).

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

15402152112 is a wasteful number, since it uses less digits than its factorization.

15402152112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14898 (or 14892 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

Adding to 15402152112 its reverse (21125120451), we get a palindrome (36527272563).

The spelling of 15402152112 in words is "fifteen billion, four hundred two million, one hundred fifty-two thousand, one hundred twelve".