20380621649300 has 288 divisors, whose sum is σ = 49131083409408. Its totient is φ = 7276680000000.

The previous prime is 20380621649263. The next prime is 20380621649309. The reversal of 20380621649300 is 394612608302.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20380621649309) by changing a digit.

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, 14045913575 + ... + 14045915025.

It is an arithmetic number, because the mean of its divisors is an integer number (170594039616).

Almost surely, 2^{20380621649300} is an apocalyptic number.

20380621649300 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 20380621649300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24565541704704).

20380621649300 is an abundant number, since it is smaller than the sum of its proper divisors (28750461760108).

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

20380621649300 is a wasteful number, since it uses less digits than its factorization.

20380621649300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2551 (or 2544 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 20380621649300 in words is "twenty trillion, three hundred eighty billion, six hundred twenty-one million, six hundred forty-nine thousand, three hundred".