21403107663300 has 648 divisors, whose sum is σ = 77964805245600. Its totient is φ = 4893784473600.

The previous prime is 21403107663293. The next prime is 21403107663313. The reversal of 21403107663300 is 336670130412.

21403107663300 is a `hidden beast` number, since 2 + 1 + 4 + 0 + 3 + 10 + 7 + 6 + 633 + 0 + 0 = 666.

It is a super-2 number, since 2×21403107663300² (a number of 27 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 469662916 + ... + 469708484.

Almost surely, 2^{21403107663300} is an apocalyptic number.

21403107663300 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 21403107663300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38982402622800).

21403107663300 is an abundant number, since it is smaller than the sum of its proper divisors (56561697582300).

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

21403107663300 is a wasteful number, since it uses less digits than its factorization.

21403107663300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45857 (or 45836 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

Adding to 21403107663300 its reverse (336670130412), we get a palindrome (21739777793712).

The spelling of 21403107663300 in words is "twenty-one trillion, four hundred three billion, one hundred seven million, six hundred sixty-three thousand, three hundred".