20164425049 has 2 divisors, whose sum is σ = 20164425050. Its totient is φ = 20164425048.

The previous prime is 20164425037. The next prime is 20164425091. The reversal of 20164425049 is 94052446102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17064719424 + 3099705625 = 130632^2 + 55675^2 .

It is a cyclic number.

It is not a de Polignac number, because 20164425049 - 2¹¹ = 20164423001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20164424999 and 20164425017.

It is not a weakly prime, because it can be changed into another prime (20164420049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10082212524 + 10082212525.

It is an arithmetic number, because the mean of its divisors is an integer number (10082212525).

Almost surely, 2^20164425049 is an apocalyptic number.

It is an amenable number.

20164425049 is a deficient number, since it is larger than the sum of its proper divisors (1).

20164425049 is an equidigital number, since it uses as much as digits as its factorization.

20164425049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 20164425049 in words is "twenty billion, one hundred sixty-four million, four hundred twenty-five thousand, forty-nine".