20879927141 has 2 divisors, whose sum is σ = 20879927142. Its totient is φ = 20879927140.

The previous prime is 20879927087. The next prime is 20879927149. The reversal of 20879927141 is 14172997802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13645744225 + 7234182916 = 116815^2 + 85054^2 .

It is a cyclic number.

It is not a de Polignac number, because 20879927141 - 2⁶ = 20879927077 is a prime.

It is a super-3 number, since 3×20879927141³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20879927141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20879927149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10439963570 + 10439963571.

It is an arithmetic number, because the mean of its divisors is an integer number (10439963571).

Almost surely, 2^20879927141 is an apocalyptic number.

It is an amenable number.

20879927141 is a deficient number, since it is larger than the sum of its proper divisors (1).

20879927141 is an equidigital number, since it uses as much as digits as its factorization.

20879927141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 50.

The spelling of 20879927141 in words is "twenty billion, eight hundred seventy-nine million, nine hundred twenty-seven thousand, one hundred forty-one".