16318529536 has 51 divisors (see below), whose sum is σ = 32702345571. Its totient is φ = 8142913536.

The previous prime is 16318529533. The next prime is 16318529561. The reversal of 16318529536 is 63592581361.

It is a happy number.

The square root of 16318529536 is 127744.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16318529536.

It is not an unprimeable number, because it can be changed into a prime (16318529533) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 32702215 + ... + 32702713.

Almost surely, 2^16318529536 is an apocalyptic number.

16318529536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

16318529536 is the 127744-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16318529536

16318529536 is an abundant number, since it is smaller than the sum of its proper divisors (16383816035).

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

16318529536 is an frugal number, since it uses more digits than its factorization.

16318529536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030 (or 501 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 49.

Multiplying 16318529536 by its sum of digits (49), we get a square (799607947264 = 894208²).

It can be divided in two parts, 163185 and 29536, that added together give a square (192721 = 439²).

The spelling of 16318529536 in words is "sixteen billion, three hundred eighteen million, five hundred twenty-nine thousand, five hundred thirty-six".