30775978001 has 2 divisors, whose sum is σ = 30775978002. Its totient is φ = 30775978000.

The previous prime is 30775977997. The next prime is 30775978007. The reversal of 30775978001 is 10087957703.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27271219600 + 3504758401 = 165140^2 + 59201^2 .

It is an emirp because it is prime and its reverse (10087957703) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30775978001 - 2² = 30775977997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (30775978007) 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, 15387989000 + 15387989001.

It is an arithmetic number, because the mean of its divisors is an integer number (15387989001).

Almost surely, 2^30775978001 is an apocalyptic number.

It is an amenable number.

30775978001 is a deficient number, since it is larger than the sum of its proper divisors (1).

30775978001 is an equidigital number, since it uses as much as digits as its factorization.

30775978001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 370440, while the sum is 47.

The spelling of 30775978001 in words is "thirty billion, seven hundred seventy-five million, nine hundred seventy-eight thousand, one".