447505548138 has 48 divisors (see below), whose sum is σ = 1058001609600. Its totient is φ = 135574251840.

The previous prime is 447505548131. The next prime is 447505548163. The reversal of 447505548138 is 831845505744.

It is a happy number.

447505548138 is a `hidden beast` number, since 4 + 4 + 7 + 5 + 0 + 554 + 81 + 3 + 8 = 666.

It is a super-2 number, since 2×447505548138² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (447505548131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 530598 + ... + 1084686.

It is an arithmetic number, because the mean of its divisors is an integer number (22041700200).

Almost surely, 2^447505548138 is an apocalyptic number.

447505548138 is an abundant number, since it is smaller than the sum of its proper divisors (610496061462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

447505548138 is a wasteful number, since it uses less digits than its factorization.

447505548138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558187 (or 558184 counting only the distinct ones).

The product of its (nonzero) digits is 10752000, while the sum is 54.

The spelling of 447505548138 in words is "four hundred forty-seven billion, five hundred five million, five hundred forty-eight thousand, one hundred thirty-eight".