447185985511 has 2 divisors, whose sum is σ = 447185985512. Its totient is φ = 447185985510.

The previous prime is 447185985479. The next prime is 447185985553. The reversal of 447185985511 is 115589581744.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 447185985511 - 2⁵ = 447185985479 is a prime.

It is a super-2 number, since 2×447185985511² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (447185785511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223592992755 + 223592992756.

It is an arithmetic number, because the mean of its divisors is an integer number (223592992756).

Almost surely, 2^447185985511 is an apocalyptic number.

447185985511 is a deficient number, since it is larger than the sum of its proper divisors (1).

447185985511 is an equidigital number, since it uses as much as digits as its factorization.

447185985511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064000, while the sum is 58.

The spelling of 447185985511 in words is "four hundred forty-seven billion, one hundred eighty-five million, nine hundred eighty-five thousand, five hundred eleven".