21473005351270 has 32 divisors (see below), whose sum is σ = 42197584244256. Its totient is φ = 7802363712000.

The previous prime is 21473005351267. The next prime is 21473005351327. The reversal of 21473005351270 is 7215350037412.

It is a happy number.

It is a super-2 number, since 2×21473005351270² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 74879619 + ... + 75165838.

It is an arithmetic number, because the mean of its divisors is an integer number (1318674507633).

Almost surely, 2^{21473005351270} is an apocalyptic number.

21473005351270 is a deficient number, since it is larger than the sum of its proper divisors (20724578892986).

21473005351270 is a wasteful number, since it uses less digits than its factorization.

21473005351270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150046776.

The product of its (nonzero) digits is 176400, while the sum is 40.

Adding to 21473005351270 its reverse (7215350037412), we get a palindrome (28688355388682).

The spelling of 21473005351270 in words is "twenty-one trillion, four hundred seventy-three billion, five million, three hundred fifty-one thousand, two hundred seventy".