21335707773400 has 48 divisors (see below), whose sum is σ = 49687243295040. Its totient is φ = 8520223286400.

The previous prime is 21335707773371. The next prime is 21335707773403. The reversal of 21335707773400 is 437770753312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21335707773403) 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 11 ways as a sum of consecutive naturals, for example, 87752191 + ... + 87994990.

It is an arithmetic number, because the mean of its divisors is an integer number (1035150901980).

Almost surely, 2^{21335707773400} is an apocalyptic number.

21335707773400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21335707773400 is an abundant number, since it is smaller than the sum of its proper divisors (28351535521640).

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

21335707773400 is a wasteful number, since it uses less digits than its factorization.

21335707773400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175747804 (or 175747795 counting only the distinct ones).

The product of its (nonzero) digits is 2593080, while the sum is 49.

The spelling of 21335707773400 in words is "twenty-one trillion, three hundred thirty-five billion, seven hundred seven million, seven hundred seventy-three thousand, four hundred".