21232627405 has 16 divisors (see below), whose sum is σ = 27972491904. Its totient is φ = 15343548480.

The previous prime is 21232627369. The next prime is 21232627421. The reversal of 21232627405 is 50472623212.

It is not a de Polignac number, because 21232627405 - 2²⁷ = 21098409677 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 1220817 + ... + 1238086.

It is an arithmetic number, because the mean of its divisors is an integer number (1748280744).

Almost surely, 2^21232627405 is an apocalyptic number.

It is an amenable number.

21232627405 is a deficient number, since it is larger than the sum of its proper divisors (6739864499).

21232627405 is a wasteful number, since it uses less digits than its factorization.

21232627405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2459076.

The product of its (nonzero) digits is 40320, while the sum is 34.

The spelling of 21232627405 in words is "twenty-one billion, two hundred thirty-two million, six hundred twenty-seven thousand, four hundred five".