21355094376000 has 1344 divisors, whose sum is σ = 95558237558784. Its totient is φ = 4422615552000.

The previous prime is 21355094375987. The next prime is 21355094376019. The reversal of 21355094376000 is 67349055312.

21355094376000 is a `hidden beast` number, since 2 + 1 + 3 + 5 + 5 + 0 + 9 + 4 + 37 + 600 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1702001727 + ... + 1702014273.

It is an arithmetic number, because the mean of its divisors is an integer number (71099879136).

Almost surely, 2^{21355094376000} is an apocalyptic number.

21355094376000 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 21355094376000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47779118779392).

21355094376000 is an abundant number, since it is smaller than the sum of its proper divisors (74203143182784).

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

21355094376000 is a wasteful number, since it uses less digits than its factorization.

21355094376000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12905 (or 12882 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 45.

The spelling of 21355094376000 in words is "twenty-one trillion, three hundred fifty-five billion, ninety-four million, three hundred seventy-six thousand".