83156943900 has 288 divisors, whose sum is σ = 255331657728. Its totient is φ = 20853676800.

The previous prime is 83156943889. The next prime is 83156943943. The reversal of 83156943900 is 934965138.

It is a self number, because there is not a number n which added to its sum of digits gives 83156943900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 120342555 + ... + 120343245.

It is an arithmetic number, because the mean of its divisors is an integer number (886568256).

Almost surely, 2^83156943900 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 83156943900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127665828864).

83156943900 is an abundant number, since it is smaller than the sum of its proper divisors (172174713828).

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

83156943900 is a wasteful number, since it uses less digits than its factorization.

83156943900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001 (or 994 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 48.

The spelling of 83156943900 in words is "eighty-three billion, one hundred fifty-six million, nine hundred forty-three thousand, nine hundred".