16165641632 has 192 divisors, whose sum is σ = 40375480320. Its totient is φ = 6207860736.

The previous prime is 16165641629. The next prime is 16165641637. The reversal of 16165641632 is 23614656161.

It is a super-2 number, since 2×16165641632² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16165641632.

It is not an unprimeable number, because it can be changed into a prime (16165641637) 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, 33194093 + ... + 33194579.

It is an arithmetic number, because the mean of its divisors is an integer number (210288960).

Almost surely, 2^16165641632 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 16165641632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20187740160).

16165641632 is an abundant number, since it is smaller than the sum of its proper divisors (24209838688).

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

16165641632 is a wasteful number, since it uses less digits than its factorization.

16165641632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923 (or 915 counting only the distinct ones).

The product of its digits is 155520, while the sum is 41.

The spelling of 16165641632 in words is "sixteen billion, one hundred sixty-five million, six hundred forty-one thousand, six hundred thirty-two".