21170430006 has 16 divisors (see below), whose sum is σ = 46190029248. Its totient is φ = 6415281800.

The previous prime is 21170429999. The next prime is 21170430013. The reversal of 21170430006 is 60003407112.

It is an interprime number because it is at equal distance from previous prime (21170429999) and next prime (21170430013).

It is a congruent 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, 160381980 + ... + 160382111.

It is an arithmetic number, because the mean of its divisors is an integer number (2886876828).

Almost surely, 2^21170430006 is an apocalyptic number.

21170430006 is an abundant number, since it is smaller than the sum of its proper divisors (25019599242).

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

21170430006 is a wasteful number, since it uses less digits than its factorization.

21170430006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320764107.

The product of its (nonzero) digits is 1008, while the sum is 24.

Adding to 21170430006 its reverse (60003407112), we get a palindrome (81173837118).

The spelling of 21170430006 in words is "twenty-one billion, one hundred seventy million, four hundred thirty thousand, six".