447135462721 has 4 divisors (see below), whose sum is σ = 447380739072. Its totient is φ = 446890186372.

The previous prime is 447135462679. The next prime is 447135462751. The reversal of 447135462721 is 127264531744.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 447135462721 - 2³³ = 438545528129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (447135462751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122635441 + ... + 122639086.

It is an arithmetic number, because the mean of its divisors is an integer number (111845184768).

Almost surely, 2^447135462721 is an apocalyptic number.

It is an amenable number.

447135462721 is a deficient number, since it is larger than the sum of its proper divisors (245276351).

447135462721 is a wasteful number, since it uses less digits than its factorization.

447135462721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245276350.

The product of its digits is 1128960, while the sum is 46.

The spelling of 447135462721 in words is "four hundred forty-seven billion, one hundred thirty-five million, four hundred sixty-two thousand, seven hundred twenty-one".