20986037441 has 2 divisors, whose sum is σ = 20986037442. Its totient is φ = 20986037440.

The previous prime is 20986037323. The next prime is 20986037467. The reversal of 20986037441 is 14473068902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19127996416 + 1858041025 = 138304^2 + 43105^2 .

It is a cyclic number.

It is not a de Polignac number, because 20986037441 - 2¹⁰ = 20986036417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20986037392 and 20986037401.

It is not a weakly prime, because it can be changed into another prime (20986037741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10493018720 + 10493018721.

It is an arithmetic number, because the mean of its divisors is an integer number (10493018721).

Almost surely, 2^20986037441 is an apocalyptic number.

It is an amenable number.

20986037441 is a deficient number, since it is larger than the sum of its proper divisors (1).

20986037441 is an equidigital number, since it uses as much as digits as its factorization.

20986037441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 20986037441 in words is "twenty billion, nine hundred eighty-six million, thirty-seven thousand, four hundred forty-one".