82241890178 has 54 divisors (see below), whose sum is σ = 146275108803. Its totient is φ = 34578557160.

The previous prime is 82241890121. The next prime is 82241890261. The reversal of 82241890178 is 87109814228.

It can be written as a sum of positive squares in only one way, i.e., 41120945089 + 41120945089 = 202783^2 + 202783^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=202783.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 167498513 + ... + 167499003.

Almost surely, 2^82241890178 is an apocalyptic number.

82241890178 is a deficient number, since it is larger than the sum of its proper divisors (64033218625).

82241890178 is an frugal number, since it uses more digits than its factorization.

82241890178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116 (or 559 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 50.

Multiplying 82241890178 by its sum of digits (50), we get a square (4112094508900 = 2027830²).

The spelling of 82241890178 in words is "eighty-two billion, two hundred forty-one million, eight hundred ninety thousand, one hundred seventy-eight".