20521525063036 has 12 divisors (see below), whose sum is σ = 37474089245712. Its totient is φ = 9814642421408.

The previous prime is 20521525063009. The next prime is 20521525063049. The reversal of 20521525063036 is 63036052512502.

It is a super-2 number, since 2×20521525063036² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20521525063036.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111530027425 + ... + 111530027608.

It is an arithmetic number, because the mean of its divisors is an integer number (3122840770476).

Almost surely, 2^{20521525063036} is an apocalyptic number.

It is an amenable number.

20521525063036 is a deficient number, since it is larger than the sum of its proper divisors (16952564182676).

20521525063036 is a wasteful number, since it uses less digits than its factorization.

20521525063036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223060055060 (or 223060055058 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 40.

Adding to 20521525063036 its reverse (63036052512502), we get a palindrome (83557577575538).

The spelling of 20521525063036 in words is "twenty trillion, five hundred twenty-one billion, five hundred twenty-five million, sixty-three thousand, thirty-six".