20185073611 has 2 divisors, whose sum is σ = 20185073612. Its totient is φ = 20185073610.

The previous prime is 20185073591. The next prime is 20185073633. The reversal of 20185073611 is 11637058102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20185073611 is a prime.

It is not a weakly prime, because it can be changed into another prime (20185073651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10092536805 + 10092536806.

It is an arithmetic number, because the mean of its divisors is an integer number (10092536806).

Almost surely, 2^20185073611 is an apocalyptic number.

20185073611 is a deficient number, since it is larger than the sum of its proper divisors (1).

20185073611 is an equidigital number, since it uses as much as digits as its factorization.

20185073611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 34.

The spelling of 20185073611 in words is "twenty billion, one hundred eighty-five million, seventy-three thousand, six hundred eleven".