20526204013 has 16 divisors (see below), whose sum is σ = 24818555520. Its totient is φ = 16583265216.

The previous prime is 20526204001. The next prime is 20526204053. The reversal of 20526204013 is 31040262502.

It is not a de Polignac number, because 20526204013 - 2⁵ = 20526203981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20526204053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 365506 + ... + 417907.

It is an arithmetic number, because the mean of its divisors is an integer number (1551159720).

Almost surely, 2^20526204013 is an apocalyptic number.

It is an amenable number.

20526204013 is a deficient number, since it is larger than the sum of its proper divisors (4292351507).

20526204013 is a wasteful number, since it uses less digits than its factorization.

20526204013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783636.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 20526204013 its reverse (31040262502), we get a palindrome (51566466515).

The spelling of 20526204013 in words is "twenty billion, five hundred twenty-six million, two hundred four thousand, thirteen".