21624040430606 has 16 divisors (see below), whose sum is σ = 32448498028128. Its totient is φ = 10807875117600.

The previous prime is 21624040430591. The next prime is 21624040430621. The reversal of 21624040430606 is 60603404042612.

It is an interprime number because it is at equal distance from previous prime (21624040430591) and next prime (21624040430621).

It is a self number, because there is not a number n which added to its sum of digits gives 21624040430606.

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, 64200596 + ... + 64536536.

It is an arithmetic number, because the mean of its divisors is an integer number (2028031126758).

Almost surely, 2^{21624040430606} is an apocalyptic number.

21624040430606 is a deficient number, since it is larger than the sum of its proper divisors (10824457597522).

21624040430606 is a wasteful number, since it uses less digits than its factorization.

21624040430606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348187.

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 21624040430606 in words is "twenty-one trillion, six hundred twenty-four billion, forty million, four hundred thirty thousand, six hundred six".