30081940643 has 2 divisors, whose sum is σ = 30081940644. Its totient is φ = 30081940642.

The previous prime is 30081940591. The next prime is 30081940723. The reversal of 30081940643 is 34604918003.

It is a weak prime.

It is an emirp because it is prime and its reverse (34604918003) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30081940643 - 2¹⁸ = 30081678499 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30081940597 and 30081940606.

It is not a weakly prime, because it can be changed into another prime (30081940243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15040970321 + 15040970322.

It is an arithmetic number, because the mean of its divisors is an integer number (15040970322).

Almost surely, 2^30081940643 is an apocalyptic number.

30081940643 is a deficient number, since it is larger than the sum of its proper divisors (1).

30081940643 is an equidigital number, since it uses as much as digits as its factorization.

30081940643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 30081940643 in words is "thirty billion, eighty-one million, nine hundred forty thousand, six hundred forty-three".