20205213536 has 12 divisors (see below), whose sum is σ = 39779014212. Its totient is φ = 10102606752.

The previous prime is 20205213503. The next prime is 20205213557. The reversal of 20205213536 is 63531250202.

It is a junction number, because it is equal to n+sod(n) for n = 20205213499 and 20205213508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315706430 + ... + 315706493.

It is an arithmetic number, because the mean of its divisors is an integer number (3314917851).

Almost surely, 2^20205213536 is an apocalyptic number.

It is an amenable number.

20205213536 is a deficient number, since it is larger than the sum of its proper divisors (19573800676).

20205213536 is an equidigital number, since it uses as much as digits as its factorization.

20205213536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631412933 (or 631412925 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 20205213536 its reverse (63531250202), we get a palindrome (83736463738).

The spelling of 20205213536 in words is "twenty billion, two hundred five million, two hundred thirteen thousand, five hundred thirty-six".