445668537898 has 16 divisors (see below), whose sum is σ = 671534679816. Its totient is φ = 221824108800.

The previous prime is 445668537883. The next prime is 445668537901. The reversal of 445668537898 is 898735866544.

It can be written as a sum of positive squares in 4 ways, for example, as 130030196409 + 315638341489 = 360597^2 + 561817^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 445668537898.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1843840 + ... + 2071492.

Almost surely, 2^445668537898 is an apocalyptic number.

445668537898 is a deficient number, since it is larger than the sum of its proper divisors (225866141918).

445668537898 is a wasteful number, since it uses less digits than its factorization.

445668537898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232089.

The product of its digits is 1393459200, while the sum is 73.

The spelling of 445668537898 in words is "four hundred forty-five billion, six hundred sixty-eight million, five hundred thirty-seven thousand, eight hundred ninety-eight".