447365323519 has 16 divisors (see below), whose sum is σ = 464468868864. Its totient is φ = 430577380800.

The previous prime is 447365323511. The next prime is 447365323553. The reversal of 447365323519 is 915323563744.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 447365323519 - 2³ = 447365323511 is a prime.

It is a super-2 number, since 2×447365323519² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447365323511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3359334 + ... + 3489964.

It is an arithmetic number, because the mean of its divisors is an integer number (29029304304).

Almost surely, 2^447365323519 is an apocalyptic number.

447365323519 is a deficient number, since it is larger than the sum of its proper divisors (17103545345).

447365323519 is a wasteful number, since it uses less digits than its factorization.

447365323519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131838.

The product of its digits is 8164800, while the sum is 52.

It can be divided in two parts, 447365 and 323519, that added together give a square (770884 = 878²).

The spelling of 447365323519 in words is "four hundred forty-seven billion, three hundred sixty-five million, three hundred twenty-three thousand, five hundred nineteen".