20471603434 has 8 divisors (see below), whose sum is σ = 30714172128. Its totient is φ = 10233546060.

The previous prime is 20471603429. The next prime is 20471603437. The reversal of 20471603434 is 43430617402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20471603434.

It is not an unprimeable number, because it can be changed into a prime (20471603437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1116462 + ... + 1134649.

It is an arithmetic number, because the mean of its divisors is an integer number (3839271516).

Almost surely, 2^20471603434 is an apocalyptic number.

20471603434 is a deficient number, since it is larger than the sum of its proper divisors (10242568694).

20471603434 is a wasteful number, since it uses less digits than its factorization.

20471603434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255660.

The product of its (nonzero) digits is 48384, while the sum is 34.

The spelling of 20471603434 in words is "twenty billion, four hundred seventy-one million, six hundred three thousand, four hundred thirty-four".