20860993441 has 4 divisors (see below), whose sum is σ = 20861282884. Its totient is φ = 20860704000.

The previous prime is 20860993379. The next prime is 20860993453. The reversal of 20860993441 is 14439906802.

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 can be written as a sum of positive squares in 2 ways, for example, as 5305665600 + 15555327841 = 72840^2 + 124721^2 .

It is a cyclic number.

It is not a de Polignac number, because 20860993441 - 2¹⁷ = 20860862369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20860993391 and 20860993400.

It is not an unprimeable number, because it can be changed into a prime (20860993841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58681 + ... + 212521.

It is an arithmetic number, because the mean of its divisors is an integer number (5215320721).

Almost surely, 2^20860993441 is an apocalyptic number.

It is an amenable number.

20860993441 is a deficient number, since it is larger than the sum of its proper divisors (289443).

20860993441 is a wasteful number, since it uses less digits than its factorization.

20860993441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289442.

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 20860993441 in words is "twenty billion, eight hundred sixty million, nine hundred ninety-three thousand, four hundred forty-one".