445644131611 has 8 divisors (see below), whose sum is σ = 539266848480. Its totient is φ = 359511232128.

The previous prime is 445644131591. The next prime is 445644131617. The reversal of 445644131611 is 116131446544.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 445644131611 - 2⁵ = 445644131579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445644131617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1872454216 + ... + 1872454453.

It is an arithmetic number, because the mean of its divisors is an integer number (67408356060).

Almost surely, 2^445644131611 is an apocalyptic number.

445644131611 is a deficient number, since it is larger than the sum of its proper divisors (93622716869).

445644131611 is a wasteful number, since it uses less digits than its factorization.

445644131611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3744908693.

The product of its digits is 138240, while the sum is 40.

The spelling of 445644131611 in words is "four hundred forty-five billion, six hundred forty-four million, one hundred thirty-one thousand, six hundred eleven".