21470666504635 has 8 divisors (see below), whose sum is σ = 25766200100736. Its totient is φ = 17175599673600.

The previous prime is 21470666504549. The next prime is 21470666504647. The reversal of 21470666504635 is 53640566607412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21470666504635 - 2²⁵ = 21470632950203 is a prime.

It is a Duffinian number.

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, 116590059 + ... + 116774068.

It is an arithmetic number, because the mean of its divisors is an integer number (3220775012592).

Almost surely, 2^{21470666504635} is an apocalyptic number.

21470666504635 is a deficient number, since it is larger than the sum of its proper divisors (4295533596101).

21470666504635 is a wasteful number, since it uses less digits than its factorization.

21470666504635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233382533.

The product of its (nonzero) digits is 21772800, while the sum is 55.

The spelling of 21470666504635 in words is "twenty-one trillion, four hundred seventy billion, six hundred sixty-six million, five hundred four thousand, six hundred thirty-five".