21475358214 has 64 divisors (see below), whose sum is σ = 44547522048. Its totient is φ = 6897945600.

The previous prime is 21475358189. The next prime is 21475358237. The reversal of 21475358214 is 41285357412.

It is a super-2 number, since 2×21475358214² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6387894 + ... + 6391254.

It is an arithmetic number, because the mean of its divisors is an integer number (696055032).

Almost surely, 2^21475358214 is an apocalyptic number.

21475358214 is an abundant number, since it is smaller than the sum of its proper divisors (23072163834).

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

21475358214 is a wasteful number, since it uses less digits than its factorization.

21475358214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3773.

The product of its digits is 268800, while the sum is 42.

The spelling of 21475358214 in words is "twenty-one billion, four hundred seventy-five million, three hundred fifty-eight thousand, two hundred fourteen".