449081750557 has 4 divisors (see below), whose sum is σ = 489907364256. Its totient is φ = 408256136860.

The previous prime is 449081750549. The next prime is 449081750587. The reversal of 449081750557 is 755057180944.

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 449081750557 - 2³ = 449081750549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 449081750498 and 449081750507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449081750527) 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, 20412806833 + ... + 20412806854.

It is an arithmetic number, because the mean of its divisors is an integer number (122476841064).

Almost surely, 2^449081750557 is an apocalyptic number.

It is an amenable number.

449081750557 is a deficient number, since it is larger than the sum of its proper divisors (40825613699).

449081750557 is a wasteful number, since it uses less digits than its factorization.

449081750557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40825613698.

The product of its (nonzero) digits is 7056000, while the sum is 55.

The spelling of 449081750557 in words is "four hundred forty-nine billion, eighty-one million, seven hundred fifty thousand, five hundred fifty-seven".