21471830600 has 96 divisors (see below), whose sum is σ = 54942956640. Its totient is φ = 7738752000.

The previous prime is 21471830599. The next prime is 21471830609. The reversal of 21471830600 is 603817412.

It is a super-2 number, since 2×21471830600² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21471830609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 205415 + ... + 291785.

It is an arithmetic number, because the mean of its divisors is an integer number (572322465).

Almost surely, 2^21471830600 is an apocalyptic number.

21471830600 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 21471830600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27471478320).

21471830600 is an abundant number, since it is smaller than the sum of its proper divisors (33471126040).

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

21471830600 is a wasteful number, since it uses less digits than its factorization.

21471830600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86511 (or 86502 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 21471830600 in words is "twenty-one billion, four hundred seventy-one million, eight hundred thirty thousand, six hundred".