445000518621 has 12 divisors (see below), whose sum is σ = 645445660860. Its totient is φ = 295436027520.

The previous prime is 445000518607. The next prime is 445000518647. The reversal of 445000518621 is 126815000544.

It is a happy number.

445000518621 is a `hidden beast` number, since 4 + 4 + 500 + 0 + 51 + 86 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 320452227225 + 124548291396 = 566085^2 + 352914^2 .

It is not a de Polignac number, because 445000518621 - 2¹⁰ = 445000517597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445000518691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102579786 + ... + 102584123.

It is an arithmetic number, because the mean of its divisors is an integer number (53787138405).

Almost surely, 2^445000518621 is an apocalyptic number.

It is an amenable number.

445000518621 is a deficient number, since it is larger than the sum of its proper divisors (200445142239).

445000518621 is a wasteful number, since it uses less digits than its factorization.

445000518621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205164156 (or 205164153 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The spelling of 445000518621 in words is "four hundred forty-five billion, five hundred eighteen thousand, six hundred twenty-one".