20421466656314 has 8 divisors (see below), whose sum is σ = 31063639421088. Its totient is φ = 10066920182620.

The previous prime is 20421466656221. The next prime is 20421466656319. The reversal of 20421466656314 is 41365666412402.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (20421466656319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71906572592 + ... + 71906572875.

It is an arithmetic number, because the mean of its divisors is an integer number (3882954927636).

Almost surely, 2^{20421466656314} is an apocalyptic number.

20421466656314 is a deficient number, since it is larger than the sum of its proper divisors (10642172764774).

20421466656314 is a wasteful number, since it uses less digits than its factorization.

20421466656314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143813145540.

The product of its (nonzero) digits is 4976640, while the sum is 50.

The spelling of 20421466656314 in words is "twenty trillion, four hundred twenty-one billion, four hundred sixty-six million, six hundred fifty-six thousand, three hundred fourteen".