20535746473 has 24 divisors (see below), whose sum is σ = 22721434848. Its totient is φ = 18546000000.

The previous prime is 20535746461. The next prime is 20535746507. The reversal of 20535746473 is 37464753502.

It is not a de Polignac number, because 20535746473 - 2¹³ = 20535738281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20535726473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17098273 + ... + 17099473.

It is an arithmetic number, because the mean of its divisors is an integer number (946726452).

Almost surely, 2^20535746473 is an apocalyptic number.

It is an amenable number.

20535746473 is a deficient number, since it is larger than the sum of its proper divisors (2185688375).

20535746473 is a wasteful number, since it uses less digits than its factorization.

20535746473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2037 (or 2026 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 46.

The spelling of 20535746473 in words is "twenty billion, five hundred thirty-five million, seven hundred forty-six thousand, four hundred seventy-three".