449640678798 has 64 divisors (see below), whose sum is σ = 1071370368000. Its totient is φ = 139278102912.

The previous prime is 449640678731. The next prime is 449640678811. The reversal of 449640678798 is 897876046944.

449640678798 is a `hidden beast` number, since 4 + 496 + 4 + 0 + 67 + 8 + 79 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3027508 + ... + 3172551.

It is an arithmetic number, because the mean of its divisors is an integer number (16740162000).

Almost surely, 2^449640678798 is an apocalyptic number.

449640678798 is an abundant number, since it is smaller than the sum of its proper divisors (621729689202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

449640678798 is a wasteful number, since it uses less digits than its factorization.

449640678798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6200166 (or 6200160 counting only the distinct ones).

The product of its (nonzero) digits is 585252864, while the sum is 72.

The spelling of 449640678798 in words is "four hundred forty-nine billion, six hundred forty million, six hundred seventy-eight thousand, seven hundred ninety-eight".