20473144147 has 8 divisors (see below), whose sum is σ = 20535606000. Its totient is φ = 20410758144.

The previous prime is 20473144127. The next prime is 20473144193. The reversal of 20473144147 is 74144137402.

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

It is a cyclic number.

It is not a de Polignac number, because 20473144147 - 2³¹ = 18325660499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20473144127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 547183 + ... + 583399.

It is an arithmetic number, because the mean of its divisors is an integer number (2566950750).

Almost surely, 2^20473144147 is an apocalyptic number.

20473144147 is a deficient number, since it is larger than the sum of its proper divisors (62461853).

20473144147 is a wasteful number, since it uses less digits than its factorization.

20473144147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37925.

The product of its (nonzero) digits is 75264, while the sum is 37.

The spelling of 20473144147 in words is "twenty billion, four hundred seventy-three million, one hundred forty-four thousand, one hundred forty-seven".