21761622214 has 8 divisors (see below), whose sum is σ = 33768034560. Its totient is φ = 10505610696.

The previous prime is 21761622209. The next prime is 21761622227. The reversal of 21761622214 is 41222616712.

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 21761622214.

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, 187600134 + ... + 187600249.

It is an arithmetic number, because the mean of its divisors is an integer number (4221004320).

Almost surely, 2^21761622214 is an apocalyptic number.

21761622214 is a deficient number, since it is larger than the sum of its proper divisors (12006412346).

21761622214 is a wasteful number, since it uses less digits than its factorization.

21761622214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375200414.

The product of its digits is 16128, while the sum is 34.

The spelling of 21761622214 in words is "twenty-one billion, seven hundred sixty-one million, six hundred twenty-two thousand, two hundred fourteen".