20134037779 has 2 divisors, whose sum is σ = 20134037780. Its totient is φ = 20134037778.

The previous prime is 20134037767. The next prime is 20134037783. The reversal of 20134037779 is 97773043102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20134037779 - 2⁵ = 20134037747 is a prime.

It is not a weakly prime, because it can be changed into another prime (20134037719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10067018889 + 10067018890.

It is an arithmetic number, because the mean of its divisors is an integer number (10067018890).

Almost surely, 2^20134037779 is an apocalyptic number.

20134037779 is a deficient number, since it is larger than the sum of its proper divisors (1).

20134037779 is an equidigital number, since it uses as much as digits as its factorization.

20134037779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 222264, while the sum is 43.

The spelling of 20134037779 in words is "twenty billion, one hundred thirty-four million, thirty-seven thousand, seven hundred seventy-nine".