21471464347466 has 16 divisors (see below), whose sum is σ = 36809023333056. Its totient is φ = 9201856464576.

The previous prime is 21471464347441. The next prime is 21471464347481. The reversal of 21471464347466 is 66474346417412.

It is a happy number.

It is a super-2 number, since 2×21471464347466² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15971231 + ... + 17263346.

It is an arithmetic number, because the mean of its divisors is an integer number (2300563958316).

Almost surely, 2^{21471464347466} is an apocalyptic number.

21471464347466 is a deficient number, since it is larger than the sum of its proper divisors (15337558985590).

21471464347466 is a wasteful number, since it uses less digits than its factorization.

21471464347466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33280733.

The product of its digits is 65028096, while the sum is 59.

The spelling of 21471464347466 in words is "twenty-one trillion, four hundred seventy-one billion, four hundred sixty-four million, three hundred forty-seven thousand, four hundred sixty-six".