21346211476 has 12 divisors (see below), whose sum is σ = 37549425172. Its totient is φ = 10617804288.

The previous prime is 21346211459. The next prime is 21346211501. The reversal of 21346211476 is 67411264312.

It can be written as a sum of positive squares in 2 ways, for example, as 15702596100 + 5643615376 = 125310^2 + 75124^2 .

It is a super-2 number, since 2×21346211476² (a number of 21 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13824495 + ... + 13826038.

Almost surely, 2^21346211476 is an apocalyptic number.

It is an amenable number.

21346211476 is a deficient number, since it is larger than the sum of its proper divisors (16203213696).

21346211476 is a wasteful number, since it uses less digits than its factorization.

21346211476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27650730 (or 27650728 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

Adding to 21346211476 its reverse (67411264312), we get a palindrome (88757475788).

The spelling of 21346211476 in words is "twenty-one billion, three hundred forty-six million, two hundred eleven thousand, four hundred seventy-six".