20430340433234 has 16 divisors (see below), whose sum is σ = 30963387049056. Its totient is φ = 10109224636800.

The previous prime is 20430340433141. The next prime is 20430340433287. The reversal of 20430340433234 is 43233404303402.

It is a junction number, because it is equal to n+sod(n) for n = 20430340433194 and 20430340433203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198572 + ... + 6395319.

It is an arithmetic number, because the mean of its divisors is an integer number (1935211690566).

Almost surely, 2^{20430340433234} is an apocalyptic number.

20430340433234 is a deficient number, since it is larger than the sum of its proper divisors (10533046615822).

20430340433234 is a wasteful number, since it uses less digits than its factorization.

20430340433234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6609961.

The product of its (nonzero) digits is 248832, while the sum is 35.

Adding to 20430340433234 its reverse (43233404303402), we get a palindrome (63663744736636).

The spelling of 20430340433234 in words is "twenty trillion, four hundred thirty billion, three hundred forty million, four hundred thirty-three thousand, two hundred thirty-four".