445255780449 has 24 divisors (see below), whose sum is σ = 630719956800. Its totient is φ = 279345466624.

The previous prime is 445255780447. The next prime is 445255780513. The reversal of 445255780449 is 944087552544.

It is not a de Polignac number, because 445255780449 - 2¹ = 445255780447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (445255780447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9860407 + ... + 9905459.

It is an arithmetic number, because the mean of its divisors is an integer number (26279998200).

Almost surely, 2^445255780449 is an apocalyptic number.

It is an amenable number.

445255780449 is a deficient number, since it is larger than the sum of its proper divisors (185464176351).

445255780449 is a wasteful number, since it uses less digits than its factorization.

445255780449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56489 (or 56472 counting only the distinct ones).

The product of its (nonzero) digits is 32256000, while the sum is 57.

The spelling of 445255780449 in words is "four hundred forty-five billion, two hundred fifty-five million, seven hundred eighty thousand, four hundred forty-nine".