16511536146 has 64 divisors (see below), whose sum is σ = 38469869568. Its totient is φ = 4627041408.

The previous prime is 16511536141. The next prime is 16511536163. The reversal of 16511536146 is 64163511561.

It is not an unprimeable number, because it can be changed into a prime (16511536141) 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 31 ways as a sum of consecutive naturals, for example, 643071 + ... + 668253.

It is an arithmetic number, because the mean of its divisors is an integer number (601091712).

Almost surely, 2^16511536146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16511536146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19234934784).

16511536146 is an abundant number, since it is smaller than the sum of its proper divisors (21958333422).

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

16511536146 is a wasteful number, since it uses less digits than its factorization.

16511536146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25495.

The product of its digits is 64800, while the sum is 39.

The spelling of 16511536146 in words is "sixteen billion, five hundred eleven million, five hundred thirty-six thousand, one hundred forty-six".