16209797032 has 128 divisors (see below), whose sum is σ = 38128527360. Its totient is φ = 6353867520.

The previous prime is 16209797029. The next prime is 16209797033. The reversal of 16209797032 is 23079790261.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (16209797033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1124253 + ... + 1138579.

It is an arithmetic number, because the mean of its divisors is an integer number (297879120).

Almost surely, 2^16209797032 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 16209797032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19064263680).

16209797032 is an abundant number, since it is smaller than the sum of its proper divisors (21918730328).

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

16209797032 is a wasteful number, since it uses less digits than its factorization.

16209797032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14423 (or 14419 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 46.

The spelling of 16209797032 in words is "sixteen billion, two hundred nine million, seven hundred ninety-seven thousand, thirty-two".