16136532020 has 72 divisors (see below), whose sum is σ = 39488943816. Its totient is φ = 5522743296.

The previous prime is 16136532011. The next prime is 16136532047. The reversal of 16136532020 is 2023563161.

It can be written as a sum of positive squares in 4 ways, for example, as 3194284324 + 12942247696 = 56518^2 + 113764^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 551192 + ... + 579728.

It is an arithmetic number, because the mean of its divisors is an integer number (548457553).

Almost surely, 2^16136532020 is an apocalyptic number.

16136532020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16136532020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19744471908).

16136532020 is an abundant number, since it is smaller than the sum of its proper divisors (23352411796).

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

16136532020 is a wasteful number, since it uses less digits than its factorization.

16136532020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29137 (or 29128 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The spelling of 16136532020 in words is "sixteen billion, one hundred thirty-six million, five hundred thirty-two thousand, twenty".