329130542621 has 2 divisors, whose sum is σ = 329130542622. Its totient is φ = 329130542620.

The previous prime is 329130542563. The next prime is 329130542647. The reversal of 329130542621 is 126245031923.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 303392757721 + 25737784900 = 550811^2 + 160430^2 .

It is a cyclic number.

It is not a de Polignac number, because 329130542621 - 2⁶ = 329130542557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (329130545621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164565271310 + 164565271311.

It is an arithmetic number, because the mean of its divisors is an integer number (164565271311).

Almost surely, 2^329130542621 is an apocalyptic number.

It is an amenable number.

329130542621 is a deficient number, since it is larger than the sum of its proper divisors (1).

329130542621 is an equidigital number, since it uses as much as digits as its factorization.

329130542621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 329130542621 in words is "three hundred twenty-nine billion, one hundred thirty million, five hundred forty-two thousand, six hundred twenty-one".