20755549942271 has 8 divisors (see below), whose sum is σ = 21471348939600. Its totient is φ = 20039756970240.

The previous prime is 20755549942247. The next prime is 20755549942291. The reversal of 20755549942271 is 17224994555702.

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 20755549942271 - 2⁶ = 20755549942207 is a prime.

It is a super-2 number, since 2×20755549942271² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20755549942291) 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, 6164015 + ... + 8916623.

It is an arithmetic number, because the mean of its divisors is an integer number (2683918617450).

Almost surely, 2^{20755549942271} is an apocalyptic number.

20755549942271 is a deficient number, since it is larger than the sum of its proper divisors (715798997329).

20755549942271 is a wasteful number, since it uses less digits than its factorization.

20755549942271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3012649.

The product of its (nonzero) digits is 63504000, while the sum is 62.

The spelling of 20755549942271 in words is "twenty trillion, seven hundred fifty-five billion, five hundred forty-nine million, nine hundred forty-two thousand, two hundred seventy-one".