445147994061 has 16 divisors (see below), whose sum is σ = 659499539520. Its totient is φ = 296755866000.

The previous prime is 445147994021. The next prime is 445147994087. The reversal of 445147994061 is 160499741544.

It is a happy number.

445147994061 is a `hidden beast` number, since 4 + 4 + 5 + 147 + 99 + 406 + 1 = 666.

It is not a de Polignac number, because 445147994061 - 2³¹ = 443000510413 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 445147993989 and 445147994007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445147994021) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 658186 + ... + 1150436.

It is an arithmetic number, because the mean of its divisors is an integer number (41218721220).

Almost surely, 2^445147994061 is an apocalyptic number.

It is an amenable number.

445147994061 is a deficient number, since it is larger than the sum of its proper divisors (214351545459).

445147994061 is a wasteful number, since it uses less digits than its factorization.

445147994061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525753 (or 525747 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 445147994061 in words is "four hundred forty-five billion, one hundred forty-seven million, nine hundred ninety-four thousand, sixty-one".