20164633203 has 32 divisors (see below), whose sum is σ = 32258644992. Its totient is φ = 11040883200.

The previous prime is 20164633201. The next prime is 20164633277. The reversal of 20164633203 is 30233646102.

It is not a de Polignac number, because 20164633203 - 2¹ = 20164633201 is a prime.

It is a super-2 number, since 2×20164633203² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (20164633201) 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, 479878 + ... + 520203.

It is an arithmetic number, because the mean of its divisors is an integer number (1008082656).

Almost surely, 2^20164633203 is an apocalyptic number.

20164633203 is a deficient number, since it is larger than the sum of its proper divisors (12094011789).

20164633203 is a wasteful number, since it uses less digits than its factorization.

20164633203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000155.

The product of its (nonzero) digits is 15552, while the sum is 30.

The spelling of 20164633203 in words is "twenty billion, one hundred sixty-four million, six hundred thirty-three thousand, two hundred three".