20434047634 has 64 divisors (see below), whose sum is σ = 43574775552. Its totient is φ = 6916608000.

The previous prime is 20434047611. The next prime is 20434047677. The reversal of 20434047634 is 43674043402.

It is a junction number, because it is equal to n+sod(n) for n = 20434047593 and 20434047602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 266167 + ... + 334234.

It is an arithmetic number, because the mean of its divisors is an integer number (680855868).

Almost surely, 2^20434047634 is an apocalyptic number.

20434047634 is an abundant number, since it is smaller than the sum of its proper divisors (23140727918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20434047634 is a wasteful number, since it uses less digits than its factorization.

20434047634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600451.

The product of its (nonzero) digits is 193536, while the sum is 37.

The spelling of 20434047634 in words is "twenty billion, four hundred thirty-four million, forty-seven thousand, six hundred thirty-four".