16532686836 has 18 divisors (see below), whose sum is σ = 41790958482. Its totient is φ = 5510895600.

The previous prime is 16532686777. The next prime is 16532686837. The reversal of 16532686836 is 63868623561.

It is a happy number.

16532686836 is a `hidden beast` number, since 16 + 532 + 6 + 8 + 68 + 36 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16409610000 + 123076836 = 128100^2 + 11094^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16532686837) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 229620615 + ... + 229620686.

Almost surely, 2^16532686836 is an apocalyptic number.

It is an amenable number.

16532686836 is an abundant number, since it is smaller than the sum of its proper divisors (25258271646).

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

16532686836 is a wasteful number, since it uses less digits than its factorization.

16532686836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459241311 (or 459241306 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 54.

The spelling of 16532686836 in words is "sixteen billion, five hundred thirty-two million, six hundred eighty-six thousand, eight hundred thirty-six".