20143236156 has 96 divisors (see below), whose sum is σ = 50930530560. Its totient is φ = 6174641664.

The previous prime is 20143236133. The next prime is 20143236161. The reversal of 20143236156 is 65163234102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3937056 + ... + 3942168.

It is an arithmetic number, because the mean of its divisors is an integer number (530526360).

Almost surely, 2^20143236156 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 20143236156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25465265280).

20143236156 is an abundant number, since it is smaller than the sum of its proper divisors (30787294404).

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

20143236156 is a wasteful number, since it uses less digits than its factorization.

20143236156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5643 (or 5641 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The spelling of 20143236156 in words is "twenty billion, one hundred forty-three million, two hundred thirty-six thousand, one hundred fifty-six".