20473536535 has 4 divisors (see below), whose sum is σ = 24568243848. Its totient is φ = 16378829224.

The previous prime is 20473536527. The next prime is 20473536607. The reversal of 20473536535 is 53563537402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53563537402 = 2 ⋅26781768701.

It is a cyclic number.

It is not a de Polignac number, because 20473536535 - 2³ = 20473536527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20473536491 and 20473536500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2047353649 + ... + 2047353658.

It is an arithmetic number, because the mean of its divisors is an integer number (6142060962).

Almost surely, 2^20473536535 is an apocalyptic number.

20473536535 is a deficient number, since it is larger than the sum of its proper divisors (4094707313).

20473536535 is an equidigital number, since it uses as much as digits as its factorization.

20473536535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4094707312.

The product of its (nonzero) digits is 1134000, while the sum is 43.

The spelling of 20473536535 in words is "twenty billion, four hundred seventy-three million, five hundred thirty-six thousand, five hundred thirty-five".