16765581532 has 48 divisors (see below), whose sum is σ = 35337012480. Its totient is φ = 6799161600.

The previous prime is 16765581527. The next prime is 16765581533. The reversal of 16765581532 is 23518556761.

It is a super-2 number, since 2×16765581532² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16765581533) 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, 450807 + ... + 486577.

It is an arithmetic number, because the mean of its divisors is an integer number (736187760).

Almost surely, 2^16765581532 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 16765581532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17668506240).

16765581532 is an abundant number, since it is smaller than the sum of its proper divisors (18571430948).

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

16765581532 is a wasteful number, since it uses less digits than its factorization.

16765581532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36682 (or 36680 counting only the distinct ones).

The product of its digits is 1512000, while the sum is 49.

The spelling of 16765581532 in words is "sixteen billion, seven hundred sixty-five million, five hundred eighty-one thousand, five hundred thirty-two".