20016032347 has 4 divisors (see below), whose sum is σ = 20020943520. Its totient is φ = 20011121176.

The previous prime is 20016032329. The next prime is 20016032369. The reversal of 20016032347 is 74323061002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20016032347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20016032447) 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, 2449468 + ... + 2457625.

It is an arithmetic number, because the mean of its divisors is an integer number (5005235880).

Almost surely, 2^20016032347 is an apocalyptic number.

20016032347 is a deficient number, since it is larger than the sum of its proper divisors (4911173).

20016032347 is an equidigital number, since it uses as much as digits as its factorization.

20016032347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4911172.

The product of its (nonzero) digits is 6048, while the sum is 28.

Adding to 20016032347 its reverse (74323061002), we get a palindrome (94339093349).

The spelling of 20016032347 in words is "twenty billion, sixteen million, thirty-two thousand, three hundred forty-seven".