20131636996 has 27 divisors (see below), whose sum is σ = 35848203573. Its totient is φ = 9892291920.

The previous prime is 20131636957. The next prime is 20131636999. The reversal of 20131636996 is 69963613102.

The square root of 20131636996 is 141886.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 654643396 + 19476993600 = 25586^2 + 139560^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20131636999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 17309511 + ... + 17310673.

Almost surely, 2^20131636996 is an apocalyptic number.

20131636996 is the 141886-th square number.

It is an amenable number.

20131636996 is a deficient number, since it is larger than the sum of its proper divisors (15716566577).

20131636996 is an frugal number, since it uses more digits than its factorization.

20131636996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2452 (or 1226 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 46.

The spelling of 20131636996 in words is "twenty billion, one hundred thirty-one million, six hundred thirty-six thousand, nine hundred ninety-six".