21352043504160 has 240 divisors, whose sum is σ = 76479623611776. Its totient is φ = 5608894781952.

The previous prime is 21352043503997. The next prime is 21352043504161. The reversal of 21352043504160 is 6140534025312.

21352043504160 is a `hidden beast` number, since 2 + 1 + 3 + 5 + 204 + 35 + 0 + 416 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (21352043504161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 11426712 + ... + 13163351.

Almost surely, 2^{21352043504160} is an apocalyptic number.

21352043504160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21352043504160 is an abundant number, since it is smaller than the sum of its proper divisors (55127580107616).

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

21352043504160 is a wasteful number, since it uses less digits than its factorization.

21352043504160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24590157 (or 24590140 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 21352043504160 its reverse (6140534025312), we get a palindrome (27492577529472).

The spelling of 21352043504160 in words is "twenty-one trillion, three hundred fifty-two billion, forty-three million, five hundred four thousand, one hundred sixty".