447644680149 has 4 divisors (see below), whose sum is σ = 596859573536. Its totient is φ = 298429786764.

The previous prime is 447644680111. The next prime is 447644680177. The reversal of 447644680149 is 941086446744.

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 not a de Polignac number, because 447644680149 - 2¹¹ = 447644678101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447644680199) 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, 74607446689 + ... + 74607446694.

It is an arithmetic number, because the mean of its divisors is an integer number (149214893384).

Almost surely, 2^447644680149 is an apocalyptic number.

It is an amenable number.

447644680149 is a deficient number, since it is larger than the sum of its proper divisors (149214893387).

447644680149 is a wasteful number, since it uses less digits than its factorization.

447644680149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149214893386.

The product of its (nonzero) digits is 18579456, while the sum is 57.

The spelling of 447644680149 in words is "four hundred forty-seven billion, six hundred forty-four million, six hundred eighty thousand, one hundred forty-nine".