30894715195873 has 2 divisors, whose sum is σ = 30894715195874. Its totient is φ = 30894715195872.

The previous prime is 30894715195823. The next prime is 30894715195943. The reversal of 30894715195873 is 37859151749803.

It is an a-pointer prime, because the next prime (30894715195943) can be obtained adding 30894715195873 to its sum of digits (70).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29337031478689 + 1557683717184 = 5416367^2 + 1248072^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30894715195873 is a prime.

It is not a weakly prime, because it can be changed into another prime (30894715195823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15447357597936 + 15447357597937.

It is an arithmetic number, because the mean of its divisors is an integer number (15447357597937).

Almost surely, 2^{30894715195873} is an apocalyptic number.

It is an amenable number.

30894715195873 is a deficient number, since it is larger than the sum of its proper divisors (1).

30894715195873 is an equidigital number, since it uses as much as digits as its factorization.

30894715195873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 228614400, while the sum is 70.

The spelling of 30894715195873 in words is "thirty trillion, eight hundred ninety-four billion, seven hundred fifteen million, one hundred ninety-five thousand, eight hundred seventy-three".