447622619138 has 54 divisors (see below), whose sum is σ = 714856877091. Its totient is φ = 210198231144.

The previous prime is 447622619099. The next prime is 447622619153. The reversal of 447622619138 is 831916226744.

It can be written as a sum of positive squares in only one way, i.e., 223811309569 + 223811309569 = 473087^2 + 473087^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=473087.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 447622619138.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1458053981 + ... + 1458054287.

Almost surely, 2^447622619138 is an apocalyptic number.

447622619138 is a deficient number, since it is larger than the sum of its proper divisors (267234257953).

447622619138 is an frugal number, since it uses more digits than its factorization.

447622619138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796 (or 399 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 53.

The spelling of 447622619138 in words is "four hundred forty-seven billion, six hundred twenty-two million, six hundred nineteen thousand, one hundred thirty-eight".