30641909761 has 2 divisors, whose sum is σ = 30641909762. Its totient is φ = 30641909760.

The previous prime is 30641909723. The next prime is 30641909789. The reversal of 30641909761 is 16790914603.

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., 24057561025 + 6584348736 = 155105^2 + 81144^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30641909761 is a prime.

It is not a weakly prime, because it can be changed into another prime (30641909161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15320954880 + 15320954881.

It is an arithmetic number, because the mean of its divisors is an integer number (15320954881).

Almost surely, 2^30641909761 is an apocalyptic number.

It is an amenable number.

30641909761 is a deficient number, since it is larger than the sum of its proper divisors (1).

30641909761 is an equidigital number, since it uses as much as digits as its factorization.

30641909761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 46.

The spelling of 30641909761 in words is "thirty billion, six hundred forty-one million, nine hundred nine thousand, seven hundred sixty-one".