20746068818400 has 864 divisors, whose sum is σ = 78597675426816. Its totient is φ = 5334336000000.

The previous prime is 20746068818329. The next prime is 20746068818411. The reversal of 20746068818400 is 481886064702.

20746068818400 is a `hidden beast` number, since 2 + 0 + 7 + 460 + 68 + 81 + 8 + 40 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (864).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1693412275 + ... + 1693424525.

It is an arithmetic number, because the mean of its divisors is an integer number (90969531744).

Almost surely, 2^{20746068818400} is an apocalyptic number.

20746068818400 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 20746068818400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39298837713408).

20746068818400 is an abundant number, since it is smaller than the sum of its proper divisors (57851606608416).

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

20746068818400 is a wasteful number, since it uses less digits than its factorization.

20746068818400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12598 (or 12573 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 54.

The spelling of 20746068818400 in words is "twenty trillion, seven hundred forty-six billion, sixty-eight million, eight hundred eighteen thousand, four hundred".