21612640513622 has 8 divisors (see below), whose sum is σ = 32418983646000. Its totient is φ = 10806312631624.

The previous prime is 21612640513579. The next prime is 21612640513637. The reversal of 21612640513622 is 22631504621612.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21612640513622.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 890879 + ... + 6634677.

It is an arithmetic number, because the mean of its divisors is an integer number (4052372955750).

Almost surely, 2^{21612640513622} is an apocalyptic number.

21612640513622 is a deficient number, since it is larger than the sum of its proper divisors (10806343132378).

21612640513622 is a wasteful number, since it uses less digits than its factorization.

21612640513622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7625190.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 21612640513622 in words is "twenty-one trillion, six hundred twelve billion, six hundred forty million, five hundred thirteen thousand, six hundred twenty-two".