94205220509 has 2 divisors, whose sum is σ = 94205220510. Its totient is φ = 94205220508.

The previous prime is 94205220479. The next prime is 94205220521. The reversal of 94205220509 is 90502250249.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72514411225 + 21690809284 = 269285^2 + 147278^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-94205220509 is a prime.

It is a super-2 number, since 2×94205220509² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (94205220209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47102610254 + 47102610255.

It is an arithmetic number, because the mean of its divisors is an integer number (47102610255).

Almost surely, 2^94205220509 is an apocalyptic number.

It is an amenable number.

94205220509 is a deficient number, since it is larger than the sum of its proper divisors (1).

94205220509 is an equidigital number, since it uses as much as digits as its factorization.

94205220509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 94205220509 in words is "ninety-four billion, two hundred five million, two hundred twenty thousand, five hundred nine".