20530102451100 has 288 divisors, whose sum is σ = 65713858543872. Its totient is φ = 4907251200000.

The previous prime is 20530102451083. The next prime is 20530102451119. The reversal of 20530102451100 is 115420103502.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 80197507 + ... + 80453093.

It is an arithmetic number, because the mean of its divisors is an integer number (228173119944).

Almost surely, 2^{20530102451100} is an apocalyptic number.

20530102451100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20530102451100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32856929271936).

20530102451100 is an abundant number, since it is smaller than the sum of its proper divisors (45183756092772).

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

20530102451100 is a wasteful number, since it uses less digits than its factorization.

20530102451100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255957 (or 255950 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 20530102451100 its reverse (115420103502), we get a palindrome (20645522554602).

The spelling of 20530102451100 in words is "twenty trillion, five hundred thirty billion, one hundred two million, four hundred fifty-one thousand, one hundred".