30205142843 has 2 divisors, whose sum is σ = 30205142844. Its totient is φ = 30205142842.

The previous prime is 30205142839. The next prime is 30205142861. The reversal of 30205142843 is 34824150203.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30205142843 - 2² = 30205142839 is a prime.

It is not a weakly prime, because it can be changed into another prime (30205142813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15102571421 + 15102571422.

It is an arithmetic number, because the mean of its divisors is an integer number (15102571422).

Almost surely, 2^30205142843 is an apocalyptic number.

30205142843 is a deficient number, since it is larger than the sum of its proper divisors (1).

30205142843 is an equidigital number, since it uses as much as digits as its factorization.

30205142843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 32.

The spelling of 30205142843 in words is "thirty billion, two hundred five million, one hundred forty-two thousand, eight hundred forty-three".