16387617792 has 528 divisors, whose sum is σ = 56459469696. Its totient is φ = 4114022400.

The previous prime is 16387617791. The next prime is 16387617797. The reversal of 16387617792 is 29771678361.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16387617791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 268649442 + ... + 268649502.

Almost surely, 2^16387617792 is an apocalyptic number.

16387617792 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 16387617792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28229734848).

16387617792 is an abundant number, since it is smaller than the sum of its proper divisors (40071851904).

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

16387617792 is a wasteful number, since it uses less digits than its factorization.

16387617792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 117 counting only the distinct ones).

The product of its digits is 5334336, while the sum is 57.

The spelling of 16387617792 in words is "sixteen billion, three hundred eighty-seven million, six hundred seventeen thousand, seven hundred ninety-two".