20331552420630 has 192 divisors, whose sum is σ = 58018473676800. Its totient is φ = 4898948947200.

The previous prime is 20331552420581. The next prime is 20331552420709. The reversal of 20331552420630 is 3602425513302.

20331552420630 is a `hidden beast` number, since 2 + 0 + 3 + 3 + 1 + 552 + 42 + 0 + 63 + 0 = 666.

It is a super-2 number, since 2×20331552420630² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 139232896 + ... + 139378844.

It is an arithmetic number, because the mean of its divisors is an integer number (302179550400).

Almost surely, 2^{20331552420630} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20331552420630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29009236838400).

20331552420630 is an abundant number, since it is smaller than the sum of its proper divisors (37686921256170).

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

20331552420630 is a wasteful number, since it uses less digits than its factorization.

20331552420630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146827 (or 146824 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

Adding to 20331552420630 its reverse (3602425513302), we get a palindrome (23933977933932).

The spelling of 20331552420630 in words is "twenty trillion, three hundred thirty-one billion, five hundred fifty-two million, four hundred twenty thousand, six hundred thirty".