30205439999 has 12 divisors (see below), whose sum is σ = 35954081064. Its totient is φ = 25288273584.

The previous prime is 30205439993. The next prime is 30205440011. The reversal of 30205439999 is 99993450203.

It is not a de Polignac number, because 30205439999 - 2⁴ = 30205439983 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30205439999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30205439993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7165772 + ... + 7169985.

It is an arithmetic number, because the mean of its divisors is an integer number (2996173422).

Almost surely, 2^30205439999 is an apocalyptic number.

30205439999 is a deficient number, since it is larger than the sum of its proper divisors (5748641065).

30205439999 is a wasteful number, since it uses less digits than its factorization.

30205439999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14335814 (or 14335807 counting only the distinct ones).

The product of its (nonzero) digits is 2361960, while the sum is 53.

The spelling of 30205439999 in words is "thirty billion, two hundred five million, four hundred thirty-nine thousand, nine hundred ninety-nine".