20473500553 has 8 divisors (see below), whose sum is σ = 22335809760. Its totient is φ = 18611371680.

The previous prime is 20473500529. The next prime is 20473500557. The reversal of 20473500553 is 35500537402.

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

It is not a de Polignac number, because 20473500553 - 2³³ = 11883565961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20473500557) 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, 323026 + ... + 381172.

It is an arithmetic number, because the mean of its divisors is an integer number (2791976220).

Almost surely, 2^20473500553 is an apocalyptic number.

It is an amenable number.

20473500553 is a deficient number, since it is larger than the sum of its proper divisors (1862309207).

20473500553 is a wasteful number, since it uses less digits than its factorization.

20473500553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90167.

The product of its (nonzero) digits is 63000, while the sum is 34.

The spelling of 20473500553 in words is "twenty billion, four hundred seventy-three million, five hundred thousand, five hundred fifty-three".