16636961271 has 32 divisors (see below), whose sum is σ = 25475842048. Its totient is φ = 9460320480.

The previous prime is 16636961249. The next prime is 16636961273. The reversal of 16636961271 is 17216963661.

It is not a de Polignac number, because 16636961271 - 2¹³ = 16636953079 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16636961271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16636961273) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7550856 + ... + 7553058.

It is an arithmetic number, because the mean of its divisors is an integer number (796120064).

Almost surely, 2^16636961271 is an apocalyptic number.

16636961271 is a deficient number, since it is larger than the sum of its proper divisors (8838880777).

16636961271 is a wasteful number, since it uses less digits than its factorization.

16636961271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3811.

The product of its digits is 489888, while the sum is 48.

The spelling of 16636961271 in words is "sixteen billion, six hundred thirty-six million, nine hundred sixty-one thousand, two hundred seventy-one".