16212499436 has 48 divisors (see below), whose sum is σ = 34310492160. Its totient is φ = 6548014080.

The previous prime is 16212499399. The next prime is 16212499439. The reversal of 16212499436 is 63499421261.

It is not an unprimeable number, because it can be changed into a prime (16212499439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21836 + ... + 181388.

It is an arithmetic number, because the mean of its divisors is an integer number (714801920).

Almost surely, 2^16212499436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16212499436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17155246080).

16212499436 is an abundant number, since it is smaller than the sum of its proper divisors (18097992724).

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

16212499436 is a wasteful number, since it uses less digits than its factorization.

16212499436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159774 (or 159772 counting only the distinct ones).

The product of its digits is 559872, while the sum is 47.

The spelling of 16212499436 in words is "sixteen billion, two hundred twelve million, four hundred ninety-nine thousand, four hundred thirty-six".