20571126271 has 8 divisors (see below), whose sum is σ = 20600866944. Its totient is φ = 20541409920.

The previous prime is 20571126259. The next prime is 20571126287. The reversal of 20571126271 is 17262117502.

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 20571126271 - 2³³ = 11981191679 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 (20571126241) 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, 2240931 + ... + 2250091.

It is an arithmetic number, because the mean of its divisors is an integer number (2575108368).

Almost surely, 2^20571126271 is an apocalyptic number.

20571126271 is a deficient number, since it is larger than the sum of its proper divisors (29740673).

20571126271 is a wasteful number, since it uses less digits than its factorization.

20571126271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12161.

The product of its (nonzero) digits is 11760, while the sum is 34.

The spelling of 20571126271 in words is "twenty billion, five hundred seventy-one million, one hundred twenty-six thousand, two hundred seventy-one".