83942811072 has 336 divisors, whose sum is σ = 273260576160. Its totient is φ = 24475336704.

The previous prime is 83942811047. The next prime is 83942811107. The reversal of 83942811072 is 27011824938.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9856288 + ... + 9864800.

Almost surely, 2^83942811072 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 83942811072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136630288080).

83942811072 is an abundant number, since it is smaller than the sum of its proper divisors (189317765088).

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

83942811072 is a wasteful number, since it uses less digits than its factorization.

83942811072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8620 (or 8607 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 83942811072 in words is "eighty-three billion, nine hundred forty-two million, eight hundred eleven thousand, seventy-two".