20321066340007 has 4 divisors (see below), whose sum is σ = 20321371834920. Its totient is φ = 20320760845096.

The previous prime is 20321066339953. The next prime is 20321066340037. The reversal of 20321066340007 is 70004366012302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20321066340007 - 2²³ = 20321057951399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321066340037) 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, 152647657 + ... + 152780722.

It is an arithmetic number, because the mean of its divisors is an integer number (5080342958730).

Almost surely, 2^{20321066340007} is an apocalyptic number.

20321066340007 is a deficient number, since it is larger than the sum of its proper divisors (305494913).

20321066340007 is an equidigital number, since it uses as much as digits as its factorization.

20321066340007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305494912.

The product of its (nonzero) digits is 36288, while the sum is 34.

The spelling of 20321066340007 in words is "twenty trillion, three hundred twenty-one billion, sixty-six million, three hundred forty thousand, seven".