181205152082 has 4 divisors (see below), whose sum is σ = 271807728126. Its totient is φ = 90602576040.

The previous prime is 181205151971. The next prime is 181205152157. The reversal of 181205152082 is 280251502181.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 179410697761 + 1794454321 = 423569^2 + 42361^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45301288019 + ... + 45301288022.

Almost surely, 2^181205152082 is an apocalyptic number.

181205152082 is a deficient number, since it is larger than the sum of its proper divisors (90602576044).

181205152082 is an equidigital number, since it uses as much as digits as its factorization.

181205152082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90602576043.

The product of its (nonzero) digits is 12800, while the sum is 35.

The spelling of 181205152082 in words is "one hundred eighty-one billion, two hundred five million, one hundred fifty-two thousand, eighty-two".