20524402553136 has 20 divisors (see below), whose sum is σ = 53021373262392. Its totient is φ = 6841467517696.

The previous prime is 20524402553069. The next prime is 20524402553141. The reversal of 20524402553136 is 63135520442502.

It is a super-2 number, since 2×20524402553136² (a number of 27 digits) contains 22 as substring.

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, 213795859881 + ... + 213795859976.

Almost surely, 2^{20524402553136} is an apocalyptic number.

It is an amenable number.

20524402553136 is an abundant number, since it is smaller than the sum of its proper divisors (32496970709256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20524402553136 is a wasteful number, since it uses less digits than its factorization.

20524402553136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427591719868 (or 427591719862 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 42.

Adding to 20524402553136 its reverse (63135520442502), we get a palindrome (83659922995638).

The spelling of 20524402553136 in words is "twenty trillion, five hundred twenty-four billion, four hundred two million, five hundred fifty-three thousand, one hundred thirty-six".