445668957849 has 4 divisors (see below), whose sum is σ = 594225277136. Its totient is φ = 297112638564.

The previous prime is 445668957823. The next prime is 445668957869. The reversal of 445668957849 is 948759866544.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 445668957849 - 2⁸ = 445668957593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445668957869) 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, 74278159639 + ... + 74278159644.

It is an arithmetic number, because the mean of its divisors is an integer number (148556319284).

Almost surely, 2^445668957849 is an apocalyptic number.

It is an amenable number.

445668957849 is a deficient number, since it is larger than the sum of its proper divisors (148556319287).

445668957849 is a wasteful number, since it uses less digits than its factorization.

445668957849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148556319286.

The product of its digits is 2090188800, while the sum is 75.

The spelling of 445668957849 in words is "four hundred forty-five billion, six hundred sixty-eight million, nine hundred fifty-seven thousand, eight hundred forty-nine".