152521320661 has 2 divisors, whose sum is σ = 152521320662. Its totient is φ = 152521320660.

The previous prime is 152521320629. The next prime is 152521320673. The reversal of 152521320661 is 166023125251.

152521320661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125298300625 + 27223020036 = 353975^2 + 164994^2 .

It is a cyclic number.

It is not a de Polignac number, because 152521320661 - 2⁵ = 152521320629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (152521320761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76260660330 + 76260660331.

It is an arithmetic number, because the mean of its divisors is an integer number (76260660331).

Almost surely, 2^152521320661 is an apocalyptic number.

It is an amenable number.

152521320661 is a deficient number, since it is larger than the sum of its proper divisors (1).

152521320661 is an equidigital number, since it uses as much as digits as its factorization.

152521320661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 152521320661 in words is "one hundred fifty-two billion, five hundred twenty-one million, three hundred twenty thousand, six hundred sixty-one".