20011219079 has 2 divisors, whose sum is σ = 20011219080. Its totient is φ = 20011219078.

The previous prime is 20011219057. The next prime is 20011219091. The reversal of 20011219079 is 97091211002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20011219079 - 2¹² = 20011214983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20011212079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005609539 + 10005609540.

It is an arithmetic number, because the mean of its divisors is an integer number (10005609540).

Almost surely, 2^20011219079 is an apocalyptic number.

20011219079 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011219079 is an equidigital number, since it uses as much as digits as its factorization.

20011219079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 32.

The spelling of 20011219079 in words is "twenty billion, eleven million, two hundred nineteen thousand, seventy-nine".