16265387512 has 64 divisors (see below), whose sum is σ = 33960785760. Its totient is φ = 7240396800.

The previous prime is 16265387491. The next prime is 16265387569. The reversal of 16265387512 is 21578356261.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2762812 + ... + 2768692.

Almost surely, 2^16265387512 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 16265387512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16980392880).

16265387512 is an abundant number, since it is smaller than the sum of its proper divisors (17695398248).

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

16265387512 is a wasteful number, since it uses less digits than its factorization.

16265387512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6544 (or 6540 counting only the distinct ones).

The product of its digits is 604800, while the sum is 46.

The spelling of 16265387512 in words is "sixteen billion, two hundred sixty-five million, three hundred eighty-seven thousand, five hundred twelve".