445422635858 has 6 divisors (see below), whose sum is σ = 668135369559. Its totient is φ = 222710846006.

The previous prime is 445422635849. The next prime is 445422635863. The reversal of 445422635858 is 858536224544.

It can be written as a sum of positive squares in only one way, i.e., 222711317929 + 222711317929 = 471923^2 + 471923^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=471923.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 707885 + ... + 1179807.

Almost surely, 2^445422635858 is an apocalyptic number.

445422635858 is a deficient number, since it is larger than the sum of its proper divisors (222712733701).

445422635858 is an frugal number, since it uses more digits than its factorization.

445422635858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943848 (or 471925 counting only the distinct ones).

The product of its digits is 36864000, while the sum is 56.

The spelling of 445422635858 in words is "four hundred forty-five billion, four hundred twenty-two million, six hundred thirty-five thousand, eight hundred fifty-eight".