83091521536 has 57 divisors (see below), whose sum is σ = 166478423971. Its totient is φ = 41471967232.

The previous prime is 83091521531. The next prime is 83091521567. The reversal of 83091521536 is 63512519038.

The square root of 83091521536 is 288256.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83091521492 and 83091521501.

It is not an unprimeable number, because it can be changed into a prime (83091521531) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 147586791 + ... + 147587353.

Almost surely, 2^83091521536 is an apocalyptic number.

83091521536 is the 288256-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83091521536

83091521536 is an abundant number, since it is smaller than the sum of its proper divisors (83386902435).

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

83091521536 is an frugal number, since it uses more digits than its factorization.

83091521536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162 (or 565 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 83091521536 in words is "eighty-three billion, ninety-one million, five hundred twenty-one thousand, five hundred thirty-six".