12428161615500 has 48 divisors (see below), whose sum is σ = 36190806628704. Its totient is φ = 3314176430400.

The previous prime is 12428161615489. The next prime is 12428161615517. The reversal of 12428161615500 is 551616182421.

It is a super-2 number, since 2×12428161615500² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4142719039 + ... + 4142722038.

It is an arithmetic number, because the mean of its divisors is an integer number (753975138098).

Almost surely, 2^{12428161615500} is an apocalyptic number.

12428161615500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12428161615500 is an abundant number, since it is smaller than the sum of its proper divisors (23762645013204).

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

12428161615500 is a wasteful number, since it uses less digits than its factorization.

12428161615500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8285441099 (or 8285441087 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 42.

Adding to 12428161615500 its reverse (551616182421), we get a palindrome (12979777797921).

The spelling of 12428161615500 in words is "twelve trillion, four hundred twenty-eight billion, one hundred sixty-one million, six hundred fifteen thousand, five hundred".