21430032256006 has 16 divisors (see below), whose sum is σ = 35079018624000. Its totient is φ = 9737675665480.

The previous prime is 21430032255997. The next prime is 21430032256043. The reversal of 21430032256006 is 60065223003412.

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 7 ways as a sum of consecutive naturals, for example, 162336886 + ... + 162468841.

It is an arithmetic number, because the mean of its divisors is an integer number (2192438664000).

Almost surely, 2^{21430032256006} is an apocalyptic number.

21430032256006 is a deficient number, since it is larger than the sum of its proper divisors (13648986367994).

21430032256006 is a wasteful number, since it uses less digits than its factorization.

21430032256006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324808739.

The product of its (nonzero) digits is 51840, while the sum is 34.

Adding to 21430032256006 its reverse (60065223003412), we get a palindrome (81495255259418).

The spelling of 21430032256006 in words is "twenty-one trillion, four hundred thirty billion, thirty-two million, two hundred fifty-six thousand, six".