20613863522532 has 24 divisors (see below), whose sum is σ = 54970302726976. Its totient is φ = 5889675292128.

The previous prime is 20613863522507. The next prime is 20613863522561. The reversal of 20613863522532 is 23522536831602.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122701568503 + ... + 122701568670.

Almost surely, 2^{20613863522532} is an apocalyptic number.

It is an amenable number.

20613863522532 is an abundant number, since it is smaller than the sum of its proper divisors (34356439204444).

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

20613863522532 is a wasteful number, since it uses less digits than its factorization.

20613863522532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245403137187 (or 245403137185 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 48.

The spelling of 20613863522532 in words is "twenty trillion, six hundred thirteen billion, eight hundred sixty-three million, five hundred twenty-two thousand, five hundred thirty-two".