16539928758 has 64 divisors (see below), whose sum is σ = 37650412800. Its totient is φ = 5379333120.

The previous prime is 16539928747. The next prime is 16539928781. The reversal of 16539928758 is 85782993561.

16539928758 is a `hidden beast` number, since 1 + 6 + 539 + 9 + 28 + 75 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 16539928695 and 16539928704.

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, 2530038 + ... + 2536566.

It is an arithmetic number, because the mean of its divisors is an integer number (588287700).

Almost surely, 2^16539928758 is an apocalyptic number.

16539928758 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16539928758, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18825206400).

16539928758 is an abundant number, since it is smaller than the sum of its proper divisors (21110484042).

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

16539928758 is a wasteful number, since it uses less digits than its factorization.

16539928758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7674 (or 7668 counting only the distinct ones).

The product of its digits is 32659200, while the sum is 63.

The spelling of 16539928758 in words is "sixteen billion, five hundred thirty-nine million, nine hundred twenty-eight thousand, seven hundred fifty-eight".