182152821661 has 2 divisors, whose sum is σ = 182152821662. Its totient is φ = 182152821660.

The previous prime is 182152821619. The next prime is 182152821673. The reversal of 182152821661 is 166128251281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124401522436 + 57751299225 = 352706^2 + 240315^2 .

It is a cyclic number.

It is not a de Polignac number, because 182152821661 - 2³¹ = 180005338013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (182152221661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 91076410830 + 91076410831.

It is an arithmetic number, because the mean of its divisors is an integer number (91076410831).

Almost surely, 2^182152821661 is an apocalyptic number.

It is an amenable number.

182152821661 is a deficient number, since it is larger than the sum of its proper divisors (1).

182152821661 is an equidigital number, since it uses as much as digits as its factorization.

182152821661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92160, while the sum is 43.

The spelling of 182152821661 in words is "one hundred eighty-two billion, one hundred fifty-two million, eight hundred twenty-one thousand, six hundred sixty-one".