20294343545500 has 384 divisors, whose sum is σ = 48845107584000. Its totient is φ = 7338260966400.

The previous prime is 20294343545491. The next prime is 20294343545501. The reversal of 20294343545500 is 554534349202.

It is a happy number.

It is a super-3 number, since 3×20294343545500³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20294343545501) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 11343958606 + ... + 11343960394.

It is an arithmetic number, because the mean of its divisors is an integer number (127200801000).

Almost surely, 2^{20294343545500} is an apocalyptic number.

20294343545500 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 20294343545500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24422553792000).

20294343545500 is an abundant number, since it is smaller than the sum of its proper divisors (28550764038500).

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

20294343545500 is a wasteful number, since it uses less digits than its factorization.

20294343545500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2470 (or 2458 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 46.

The spelling of 20294343545500 in words is "twenty trillion, two hundred ninety-four billion, three hundred forty-three million, five hundred forty-five thousand, five hundred".