16265139066 has 40 divisors (see below), whose sum is σ = 39759233184. Its totient is φ = 4928829480.

The previous prime is 16265139041. The next prime is 16265139109. The reversal of 16265139066 is 66093156261.

16265139066 is a `hidden beast` number, since 1 + 626 + 5 + 13 + 9 + 0 + 6 + 6 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4561950 + ... + 4565513.

Almost surely, 2^16265139066 is an apocalyptic number.

16265139066 is an abundant number, since it is smaller than the sum of its proper divisors (23494094118).

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

16265139066 is a wasteful number, since it uses less digits than its factorization.

16265139066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9127488 (or 9127479 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 16265139066 in words is "sixteen billion, two hundred sixty-five million, one hundred thirty-nine thousand, sixty-six".