449009136578 has 16 divisors (see below), whose sum is σ = 676638525696. Its totient is φ = 223463273040.

The previous prime is 449009136449. The next prime is 449009136581. The reversal of 449009136578 is 875631900944.

It is a Curzon number.

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, 2941868 + ... + 3090728.

It is an arithmetic number, because the mean of its divisors is an integer number (42289907856).

Almost surely, 2^449009136578 is an apocalyptic number.

449009136578 is a deficient number, since it is larger than the sum of its proper divisors (227629389118).

449009136578 is a wasteful number, since it uses less digits than its factorization.

449009136578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155849.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 449009136578 in words is "four hundred forty-nine billion, nine million, one hundred thirty-six thousand, five hundred seventy-eight".