445383783865638 has 48 divisors (see below), whose sum is σ = 1018991954700720. Its totient is φ = 140203827661248.

The previous prime is 445383783865621. The next prime is 445383783865639. The reversal of 445383783865638 is 836568387383544.

445383783865638 is a `hidden beast` number, since 4 + 4 + 5 + 383 + 7 + 83 + 86 + 56 + 38 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445383783865639) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2053979545 + ... + 2054196372.

It is an arithmetic number, because the mean of its divisors is an integer number (21228999056265).

Almost surely, 2^{445383783865638} is an apocalyptic number.

445383783865638 is an abundant number, since it is smaller than the sum of its proper divisors (573608170835082).

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

445383783865638 is a wasteful number, since it uses less digits than its factorization.

445383783865638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4108176261 (or 4108176258 counting only the distinct ones).

The product of its digits is 33443020800, while the sum is 81.

The spelling of 445383783865638 in words is "four hundred forty-five trillion, three hundred eighty-three billion, seven hundred eighty-three million, eight hundred sixty-five thousand, six hundred thirty-eight".