20010504533 has 4 divisors (see below), whose sum is σ = 20163256608. Its totient is φ = 19857752460.

The previous prime is 20010504523. The next prime is 20010504541. The reversal of 20010504533 is 33540501002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20010504533 - 2⁸ = 20010504277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20010504499 and 20010504508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010504523) 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, 76375841 + ... + 76376102.

It is an arithmetic number, because the mean of its divisors is an integer number (5040814152).

Almost surely, 2^20010504533 is an apocalyptic number.

It is an amenable number.

20010504533 is a deficient number, since it is larger than the sum of its proper divisors (152752075).

20010504533 is a wasteful number, since it uses less digits than its factorization.

20010504533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152752074.

The product of its (nonzero) digits is 1800, while the sum is 23.

The spelling of 20010504533 in words is "twenty billion, ten million, five hundred four thousand, five hundred thirty-three".