20715733155244 has 24 divisors (see below), whose sum is σ = 37921220961120. Its totient is φ = 9883300758144.

The previous prime is 20715733155241. The next prime is 20715733155263. The reversal of 20715733155244 is 44255133751702.

It is not an unprimeable number, because it can be changed into a prime (20715733155241) 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, 275232559 + ... + 275307814.

It is an arithmetic number, because the mean of its divisors is an integer number (1580050873380).

Almost surely, 2^{20715733155244} is an apocalyptic number.

It is an amenable number.

20715733155244 is a deficient number, since it is larger than the sum of its proper divisors (17205487805876).

20715733155244 is a wasteful number, since it uses less digits than its factorization.

20715733155244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550540809 (or 550540807 counting only the distinct ones).

The product of its (nonzero) digits is 3528000, while the sum is 49.

The spelling of 20715733155244 in words is "twenty trillion, seven hundred fifteen billion, seven hundred thirty-three million, one hundred fifty-five thousand, two hundred forty-four".