16064131512 has 128 divisors (see below), whose sum is σ = 47244960000. Its totient is φ = 4487408640.

The previous prime is 16064131481. The next prime is 16064131537. The reversal of 16064131512 is 21513146061.

It is a happy number.

It is a super-2 number, since 2×16064131512² (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 16064131512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2945364 + ... + 2950812.

It is an arithmetic number, because the mean of its divisors is an integer number (369101250).

Almost surely, 2^16064131512 is an apocalyptic number.

16064131512 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 16064131512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23622480000).

16064131512 is an abundant number, since it is smaller than the sum of its proper divisors (31180828488).

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

16064131512 is a wasteful number, since it uses less digits than its factorization.

16064131512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6341 (or 6337 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

Adding to 16064131512 its reverse (21513146061), we get a palindrome (37577277573).

The spelling of 16064131512 in words is "sixteen billion, sixty-four million, one hundred thirty-one thousand, five hundred twelve".