16634952906 has 192 divisors, whose sum is σ = 41721329664. Its totient is φ = 4373740800.

The previous prime is 16634952899. The next prime is 16634952907. The reversal of 16634952906 is 60925943661.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16634952907) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15648531 + ... + 15649593.

It is an arithmetic number, because the mean of its divisors is an integer number (217298592).

Almost surely, 2^16634952906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16634952906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20860664832).

16634952906 is an abundant number, since it is smaller than the sum of its proper divisors (25086376758).

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

16634952906 is a wasteful number, since it uses less digits than its factorization.

16634952906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189 (or 1176 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 51.

The spelling of 16634952906 in words is "sixteen billion, six hundred thirty-four million, nine hundred fifty-two thousand, nine hundred six".