20164522136 has 64 divisors (see below), whose sum is σ = 42664320000. Its totient is φ = 8851651200.

The previous prime is 20164522127. The next prime is 20164522159. The reversal of 20164522136 is 63122546102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1353866 + ... + 1368678.

It is an arithmetic number, because the mean of its divisors is an integer number (666630000).

Almost surely, 2^20164522136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20164522136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21332160000).

20164522136 is an abundant number, since it is smaller than the sum of its proper divisors (22499797864).

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

20164522136 is a wasteful number, since it uses less digits than its factorization.

20164522136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15360 (or 15356 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 20164522136 in words is "twenty billion, one hundred sixty-four million, five hundred twenty-two thousand, one hundred thirty-six".