20224698961 has 2 divisors, whose sum is σ = 20224698962. Its totient is φ = 20224698960.

The previous prime is 20224698959. The next prime is 20224699021. The reversal of 20224698961 is 16989642202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16521246225 + 3703452736 = 128535^2 + 60856^2 .

It is a cyclic number.

It is not a de Polignac number, because 20224698961 - 2¹ = 20224698959 is a prime.

Together with 20224698959, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20224698761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10112349480 + 10112349481.

It is an arithmetic number, because the mean of its divisors is an integer number (10112349481).

Almost surely, 2^20224698961 is an apocalyptic number.

It is an amenable number.

20224698961 is a deficient number, since it is larger than the sum of its proper divisors (1).

20224698961 is an equidigital number, since it uses as much as digits as its factorization.

20224698961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 49.

The spelling of 20224698961 in words is "twenty billion, two hundred twenty-four million, six hundred ninety-eight thousand, nine hundred sixty-one".