20960958841 has 3 divisors (see below), whose sum is σ = 20961103621. Its totient is φ = 20960814062.

The previous prime is 20960958839. The next prime is 20960958899. The reversal of 20960958841 is 14885906902.

The square root of 20960958841 is 144779.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 20960958841 - 2¹ = 20960958839 is a prime.

It is a super-3 number, since 3×20960958841³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20960952841) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 72390 + ... + 217168.

Almost surely, 2^20960958841 is an apocalyptic number.

20960958841 is the 144779-th square number.

20960958841 is the 72390-th centered octagonal number.

It is an amenable number.

20960958841 is a deficient number, since it is larger than the sum of its proper divisors (144780).

20960958841 is an frugal number, since it uses more digits than its factorization.

20960958841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289558 (or 144779 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 52.

The spelling of 20960958841 in words is "twenty billion, nine hundred sixty million, nine hundred fifty-eight thousand, eight hundred forty-one".