20324700721734 has 16 divisors (see below), whose sum is σ = 41416371282672. Its totient is φ = 6647071934048.

The previous prime is 20324700721709. The next prime is 20324700721789. The reversal of 20324700721734 is 43712700742302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31957076289 + ... + 31957076924.

It is an arithmetic number, because the mean of its divisors is an integer number (2588523205167).

Almost surely, 2^{20324700721734} is an apocalyptic number.

20324700721734 is an abundant number, since it is smaller than the sum of its proper divisors (21091670560938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20324700721734 is a wasteful number, since it uses less digits than its factorization.

20324700721734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63914153271.

The product of its (nonzero) digits is 395136, while the sum is 42.

The spelling of 20324700721734 in words is "twenty trillion, three hundred twenty-four billion, seven hundred million, seven hundred twenty-one thousand, seven hundred thirty-four".