20322556656321 has 8 divisors (see below), whose sum is σ = 27556009025760. Its totient is φ = 13318737695552.

The previous prime is 20322556656263. The next prime is 20322556656379. The reversal of 20322556656321 is 12365665522302.

It is an interprime number because it is at equal distance from previous prime (20322556656263) and next prime (20322556656379).

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

It is a cyclic number.

It is not a de Polignac number, because 20322556656321 - 2²³ = 20322548267713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20322556656221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57408351960 + ... + 57408352313.

It is an arithmetic number, because the mean of its divisors is an integer number (3444501128220).

Almost surely, 2^{20322556656321} is an apocalyptic number.

It is an amenable number.

20322556656321 is a deficient number, since it is larger than the sum of its proper divisors (7233452369439).

20322556656321 is a wasteful number, since it uses less digits than its factorization.

20322556656321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114816704335.

The product of its (nonzero) digits is 3888000, while the sum is 48.

The spelling of 20322556656321 in words is "twenty trillion, three hundred twenty-two billion, five hundred fifty-six million, six hundred fifty-six thousand, three hundred twenty-one".