20847060326400 has 576 divisors, whose sum is σ = 85923103069440. Its totient is φ = 4331854233600.

The previous prime is 20847060326381. The next prime is 20847060326453. The reversal of 20847060326400 is 462306074802.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10945882 + ... + 12708518.

It is an arithmetic number, because the mean of its divisors is an integer number (149172053940).

Almost surely, 2^{20847060326400} is an apocalyptic number.

20847060326400 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 20847060326400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42961551534720).

20847060326400 is an abundant number, since it is smaller than the sum of its proper divisors (65076042743040).

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

20847060326400 is a wasteful number, since it uses less digits than its factorization.

20847060326400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762690 (or 1762665 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 42.

The spelling of 20847060326400 in words is "twenty trillion, eight hundred forty-seven billion, sixty million, three hundred twenty-six thousand, four hundred".