20119676849 has 2 divisors, whose sum is σ = 20119676850. Its totient is φ = 20119676848.

The previous prime is 20119676839. The next prime is 20119676867. The reversal of 20119676849 is 94867691102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15433589824 + 4686087025 = 124232^2 + 68455^2 .

It is a cyclic number.

It is not a de Polignac number, because 20119676849 - 2²⁸ = 19851241393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20119676849.

It is not a weakly prime, because it can be changed into another prime (20119676839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10059838424 + 10059838425.

It is an arithmetic number, because the mean of its divisors is an integer number (10059838425).

Almost surely, 2^20119676849 is an apocalyptic number.

It is an amenable number.

20119676849 is a deficient number, since it is larger than the sum of its proper divisors (1).

20119676849 is an equidigital number, since it uses as much as digits as its factorization.

20119676849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The spelling of 20119676849 in words is "twenty billion, one hundred nineteen million, six hundred seventy-six thousand, eight hundred forty-nine".