20303545522400 has 576 divisors, whose sum is σ = 62811479808000. Its totient is φ = 6244383129600.

The previous prime is 20303545522391. The next prime is 20303545522483. The reversal of 20303545522400 is 422554530302.

It is a Harshad number since it is a multiple of its sum of digits (35).

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, 615261101 + ... + 615294099.

It is an arithmetic number, because the mean of its divisors is an integer number (109047708000).

Almost surely, 2^{20303545522400} is an apocalyptic number.

20303545522400 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 20303545522400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31405739904000).

20303545522400 is an abundant number, since it is smaller than the sum of its proper divisors (42507934285600).

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

20303545522400 is a wasteful number, since it uses less digits than its factorization.

20303545522400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33347 (or 33334 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 35.

The spelling of 20303545522400 in words is "twenty trillion, three hundred three billion, five hundred forty-five million, five hundred twenty-two thousand, four hundred".