16239538756 has 48 divisors (see below), whose sum is σ = 33327866880. Its totient is φ = 6778830240.

The previous prime is 16239538753. The next prime is 16239538781. The reversal of 16239538756 is 65783593261.

It is a junction number, because it is equal to n+sod(n) for n = 16239538697 and 16239538706.

It is not an unprimeable number, because it can be changed into a prime (16239538753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 413451 + ... + 451021.

It is an arithmetic number, because the mean of its divisors is an integer number (694330560).

Almost surely, 2^16239538756 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 16239538756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16663933440).

16239538756 is an abundant number, since it is smaller than the sum of its proper divisors (17088328124).

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

16239538756 is a wasteful number, since it uses less digits than its factorization.

16239538756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37984 (or 37982 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 55.

The spelling of 16239538756 in words is "sixteen billion, two hundred thirty-nine million, five hundred thirty-eight thousand, seven hundred fifty-six".