445445221402 has 8 divisors (see below), whose sum is σ = 671525460000. Its totient is φ = 221603401404.

The previous prime is 445445221399. The next prime is 445445221409. The reversal of 445445221402 is 204122544544.

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

It is not an unprimeable number, because it can be changed into a prime (445445221409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559604152 + ... + 559604947.

It is an arithmetic number, because the mean of its divisors is an integer number (83940682500).

Almost surely, 2^445445221402 is an apocalyptic number.

445445221402 is a deficient number, since it is larger than the sum of its proper divisors (226080238598).

445445221402 is a wasteful number, since it uses less digits than its factorization.

445445221402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119209300.

The product of its (nonzero) digits is 204800, while the sum is 37.

Adding to 445445221402 its reverse (204122544544), we get a palindrome (649567765946).

The spelling of 445445221402 in words is "four hundred forty-five billion, four hundred forty-five million, two hundred twenty-one thousand, four hundred two".