664098490449 has 8 divisors (see below), whose sum is σ = 983849615520. Its totient is φ = 442732326948.

The previous prime is 664098490427. The next prime is 664098490459. The reversal of 664098490449 is 944094890466.

664098490449 is a `hidden beast` number, since 6 + 64 + 0 + 98 + 49 + 0 + 449 = 666.

664098490449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 664098490449 - 2⁸ = 664098490193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (664098490459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12298120167 + ... + 12298120220.

It is an arithmetic number, because the mean of its divisors is an integer number (122981201940).

Almost surely, 2^664098490449 is an apocalyptic number.

It is an amenable number.

664098490449 is a deficient number, since it is larger than the sum of its proper divisors (319751125071).

664098490449 is a wasteful number, since it uses less digits than its factorization.

664098490449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24596240396 (or 24596240390 counting only the distinct ones).

The product of its (nonzero) digits is 53747712, while the sum is 63.

The spelling of 664098490449 in words is "six hundred sixty-four billion, ninety-eight million, four hundred ninety thousand, four hundred forty-nine".