20143281204 has 30 divisors (see below), whose sum is σ = 52658516834. Its totient is φ = 6714426960.

The previous prime is 20143281199. The next prime is 20143281217. The reversal of 20143281204 is 40218234102.

20143281204 is a `hidden beast` number, since 20 + 1 + 432 + 8 + 1 + 204 = 666.

It can be written as a sum of positive squares in only one way, i.e., 14933328804 + 5209952400 = 122202^2 + 72180^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 31084987 + ... + 31085634.

Almost surely, 2^20143281204 is an apocalyptic number.

It is an amenable number.

20143281204 is an abundant number, since it is smaller than the sum of its proper divisors (32515235630).

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

20143281204 is a wasteful number, since it uses less digits than its factorization.

20143281204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62170637 (or 62170626 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The spelling of 20143281204 in words is "twenty billion, one hundred forty-three million, two hundred eighty-one thousand, two hundred four".