445444161236 has 6 divisors (see below), whose sum is σ = 779527282170. Its totient is φ = 222722080616.

The previous prime is 445444161199. The next prime is 445444161247. The reversal of 445444161236 is 632161444544.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 417065389636 + 28378771600 = 645806^2 + 168460^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55680520151 + ... + 55680520158.

It is an arithmetic number, because the mean of its divisors is an integer number (129921213695).

Almost surely, 2^445444161236 is an apocalyptic number.

It is an amenable number.

445444161236 is a deficient number, since it is larger than the sum of its proper divisors (334083120934).

445444161236 is a wasteful number, since it uses less digits than its factorization.

445444161236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111361040313 (or 111361040311 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 44.

The spelling of 445444161236 in words is "four hundred forty-five billion, four hundred forty-four million, one hundred sixty-one thousand, two hundred thirty-six".