16215324400 has 60 divisors (see below), whose sum is σ = 42498902664. Its totient is φ = 5896480000.

The previous prime is 16215324383. The next prime is 16215324403. The reversal of 16215324400 is 442351261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16215324403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1838251 + ... + 1847050.

Almost surely, 2^16215324400 is an apocalyptic number.

16215324400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16215324400 is an abundant number, since it is smaller than the sum of its proper divisors (26283578264).

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

16215324400 is a wasteful number, since it uses less digits than its factorization.

16215324400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3685330 (or 3685319 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 16215324400 its reverse (442351261), we get a palindrome (16657675661).

The spelling of 16215324400 in words is "sixteen billion, two hundred fifteen million, three hundred twenty-four thousand, four hundred".