6491165826408 has 64 divisors (see below), whose sum is σ = 16244044560000. Its totient is φ = 2161572010752.

The previous prime is 6491165826377. The next prime is 6491165826421. The reversal of 6491165826408 is 8046285611946.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165448938 + ... + 165488166.

It is an arithmetic number, because the mean of its divisors is an integer number (253813196250).

Almost surely, 2^{6491165826408} is an apocalyptic number.

It is an amenable number.

6491165826408 is an abundant number, since it is smaller than the sum of its proper divisors (9752878733592).

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

6491165826408 is a wasteful number, since it uses less digits than its factorization.

6491165826408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45914 (or 45910 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 60.

The spelling of 6491165826408 in words is "six trillion, four hundred ninety-one billion, one hundred sixty-five million, eight hundred twenty-six thousand, four hundred eight".