20185203536 has 40 divisors (see below), whose sum is σ = 39905125224. Its totient is φ = 9888399360.

The previous prime is 20185203523. The next prime is 20185203583. The reversal of 20185203536 is 63530258102.

It can be written as a sum of positive squares in 4 ways, for example, as 4298113600 + 15887089936 = 65560^2 + 126044^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20185203496 and 20185203505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210596 + ... + 291068.

Almost surely, 2^20185203536 is an apocalyptic number.

It is an amenable number.

20185203536 is a deficient number, since it is larger than the sum of its proper divisors (19719921688).

20185203536 is a wasteful number, since it uses less digits than its factorization.

20185203536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80799 (or 80793 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 20185203536 in words is "twenty billion, one hundred eighty-five million, two hundred three thousand, five hundred thirty-six".