20383636400 has 60 divisors (see below), whose sum is σ = 49153996800. Its totient is φ = 8123101440.

The previous prime is 20383636387. The next prime is 20383636409. The reversal of 20383636400 is 463638302.

It is not an unprimeable number, because it can be changed into a prime (20383636409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12881 + ... + 202319.

It is an arithmetic number, because the mean of its divisors is an integer number (819233280).

Almost surely, 2^20383636400 is an apocalyptic number.

20383636400 is a gapful number since it is divisible by the number (20) 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 20383636400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24576998400).

20383636400 is an abundant number, since it is smaller than the sum of its proper divisors (28770360400).

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

20383636400 is a wasteful number, since it uses less digits than its factorization.

20383636400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189726 (or 189715 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 35.

The spelling of 20383636400 in words is "twenty billion, three hundred eighty-three million, six hundred thirty-six thousand, four hundred".