20837143296 has 144 divisors (see below), whose sum is σ = 64298680320. Its totient is φ = 6643676160.

The previous prime is 20837143267. The next prime is 20837143309. The reversal of 20837143296 is 69234173802.

20837143296 is a `hidden beast` number, since 208 + 3 + 7 + 1 + 432 + 9 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

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, 93441 + ... + 224511.

Almost surely, 2^20837143296 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 20837143296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32149340160).

20837143296 is an abundant number, since it is smaller than the sum of its proper divisors (43461537024).

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

20837143296 is a wasteful number, since it uses less digits than its factorization.

20837143296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131119 (or 131099 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 20837143296 in words is "twenty billion, eight hundred thirty-seven million, one hundred forty-three thousand, two hundred ninety-six".