445521515442 has 8 divisors (see below), whose sum is σ = 891043030896. Its totient is φ = 148507171812.

The previous prime is 445521515431. The next prime is 445521515449. The reversal of 445521515442 is 244515125544.

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

445521515442 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 445521515394 and 445521515403.

It is not an unprimeable number, because it can be changed into a prime (445521515449) 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 3 ways as a sum of consecutive naturals, for example, 37126792948 + ... + 37126792959.

It is an arithmetic number, because the mean of its divisors is an integer number (111380378862).

Almost surely, 2^445521515442 is an apocalyptic number.

445521515442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

445521515442 is a wasteful number, since it uses less digits than its factorization.

445521515442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74253585912.

The product of its digits is 640000, while the sum is 42.

The spelling of 445521515442 in words is "four hundred forty-five billion, five hundred twenty-one million, five hundred fifteen thousand, four hundred forty-two".