16219533312 has 520 divisors, whose sum is σ = 53282127360. Its totient is φ = 4897013760.

The previous prime is 16219533311. The next prime is 16219533313. The reversal of 16219533312 is 21333591261.

It is an interprime number because it is at equal distance from previous prime (16219533311) and next prime (16219533313).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16219533311) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 195416023 + ... + 195416105.

Almost surely, 2^16219533312 is an apocalyptic number.

16219533312 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 16219533312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26641063680).

16219533312 is an abundant number, since it is smaller than the sum of its proper divisors (37062594048).

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

16219533312 is an equidigital number, since it uses as much as digits as its factorization.

16219533312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 138 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The spelling of 16219533312 in words is "sixteen billion, two hundred nineteen million, five hundred thirty-three thousand, three hundred twelve".