30420838719 has 12 divisors (see below), whose sum is σ = 43979009256. Its totient is φ = 20263114032.

The previous prime is 30420838709. The next prime is 30420838739. The reversal of 30420838719 is 91783802403.

It is not a de Polignac number, because 30420838719 - 2¹¹ = 30420836671 is a prime.

It is a super-2 number, since 2×30420838719² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30420838709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1442712 + ... + 1463645.

It is an arithmetic number, because the mean of its divisors is an integer number (3664917438).

Almost surely, 2^30420838719 is an apocalyptic number.

30420838719 is a deficient number, since it is larger than the sum of its proper divisors (13558170537).

30420838719 is a wasteful number, since it uses less digits than its factorization.

30420838719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2907526 (or 2907523 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 30420838719 in words is "thirty billion, four hundred twenty million, eight hundred thirty-eight thousand, seven hundred nineteen".