16536681306 has 32 divisors (see below), whose sum is σ = 37371038400. Its totient is φ = 5418798480.

The previous prime is 16536681283. The next prime is 16536681307. The reversal of 16536681306 is 60318663561.

16536681306 is a `hidden beast` number, since 1 + 6 + 536 + 6 + 81 + 30 + 6 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16536681307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2592025 + ... + 2598396.

It is an arithmetic number, because the mean of its divisors is an integer number (1167844950).

Almost surely, 2^16536681306 is an apocalyptic number.

16536681306 is an abundant number, since it is smaller than the sum of its proper divisors (20834357094).

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

16536681306 is a wasteful number, since it uses less digits than its factorization.

16536681306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5190491 (or 5190485 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 16536681306 in words is "sixteen billion, five hundred thirty-six million, six hundred eighty-one thousand, three hundred six".