20711409858441 has 27 divisors (see below), whose sum is σ = 29988536480461. Its totient is φ = 13774429935384.

The previous prime is 20711409858421. The next prime is 20711409858449. The reversal of 20711409858441 is 14485890411702.

It is a happy number.

The square root of 20711409858441 is 4550979.

It is a perfect power (a square), and thus also a powerful number.

20711409858441 is a `hidden beast` number, since 2 + 0 + 7 + 1 + 14 + 0 + 9 + 8 + 584 + 41 = 666.

It is not a de Polignac number, because 20711409858441 - 2¹³ = 20711409850249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20711409858449) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 6539755240 + ... + 6539758406.

Almost surely, 2^{20711409858441} is an apocalyptic number.

20711409858441 is the 4550979-th square number.

20711409858441 is the 2275490-th centered octagonal number.

It is an amenable number.

20711409858441 is a deficient number, since it is larger than the sum of its proper divisors (9277126622020).

20711409858441 is an frugal number, since it uses more digits than its factorization.

20711409858441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7298 (or 3649 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 54.

The spelling of 20711409858441 in words is "twenty trillion, seven hundred eleven billion, four hundred nine million, eight hundred fifty-eight thousand, four hundred forty-one".