20204911896 has 64 divisors (see below), whose sum is σ = 55662942720. Its totient is φ = 6072312960.

The previous prime is 20204911891. The next prime is 20204911901. The reversal of 20204911896 is 69811940202.

It is an interprime number because it is at equal distance from previous prime (20204911891) and next prime (20204911901).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20204911891) 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 15 ways as a sum of consecutive naturals, for example, 739600 + ... + 766431.

It is an arithmetic number, because the mean of its divisors is an integer number (869733480).

Almost surely, 2^20204911896 is an apocalyptic number.

20204911896 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20204911896 is an abundant number, since it is smaller than the sum of its proper divisors (35458030824).

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

20204911896 is a wasteful number, since it uses less digits than its factorization.

20204911896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506096 (or 1506092 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The spelling of 20204911896 in words is "twenty billion, two hundred four million, nine hundred eleven thousand, eight hundred ninety-six".