445138961836 has 6 divisors (see below), whose sum is σ = 778993183220. Its totient is φ = 222569480916.

The previous prime is 445138961831. The next prime is 445138961879. The reversal of 445138961836 is 638169831544.

It is not an unprimeable number, because it can be changed into a prime (445138961831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55642370226 + ... + 55642370233.

Almost surely, 2^445138961836 is an apocalyptic number.

It is an amenable number.

445138961836 is a deficient number, since it is larger than the sum of its proper divisors (333854221384).

445138961836 is a wasteful number, since it uses less digits than its factorization.

445138961836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111284740463 (or 111284740461 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 58.

The spelling of 445138961836 in words is "four hundred forty-five billion, one hundred thirty-eight million, nine hundred sixty-one thousand, eight hundred thirty-six".