20030722147 has 4 divisors (see below), whose sum is σ = 20061118440. Its totient is φ = 20000325856.

The previous prime is 20030722093. The next prime is 20030722157. The reversal of 20030722147 is 74122703002.

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-20030722147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20030722157) 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, 15197158 + ... + 15198475.

It is an arithmetic number, because the mean of its divisors is an integer number (5015279610).

Almost surely, 2^20030722147 is an apocalyptic number.

20030722147 is a deficient number, since it is larger than the sum of its proper divisors (30396293).

20030722147 is an equidigital number, since it uses as much as digits as its factorization.

20030722147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30396292.

The product of its (nonzero) digits is 4704, while the sum is 28.

The spelling of 20030722147 in words is "twenty billion, thirty million, seven hundred twenty-two thousand, one hundred forty-seven".