83842729040 has 80 divisors (see below), whose sum is σ = 223017297408. Its totient is φ = 28715731968.

The previous prime is 83842729037. The next prime is 83842729057. The reversal of 83842729040 is 4092724838.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 455129 + ... + 612231.

Almost surely, 2^83842729040 is an apocalyptic number.

83842729040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83842729040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111508648704).

83842729040 is an abundant number, since it is smaller than the sum of its proper divisors (139174568368).

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

83842729040 is a wasteful number, since it uses less digits than its factorization.

83842729040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158076 (or 158070 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 83842729040 in words is "eighty-three billion, eight hundred forty-two million, seven hundred twenty-nine thousand, forty".