68449591674 has 16 divisors (see below), whose sum is σ = 152110203840. Its totient is φ = 22816530540.

The previous prime is 68449591643. The next prime is 68449591739. The reversal of 68449591674 is 47619594486.

68449591674 is a `hidden beast` number, since 6 + 84 + 495 + 9 + 1 + 67 + 4 = 666.

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, 633792462 + ... + 633792569.

It is an arithmetic number, because the mean of its divisors is an integer number (9506887740).

Almost surely, 2^68449591674 is an apocalyptic number.

68449591674 is an abundant number, since it is smaller than the sum of its proper divisors (83660612166).

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

68449591674 is a wasteful number, since it uses less digits than its factorization.

68449591674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267585042 (or 1267585036 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 63.

The spelling of 68449591674 in words is "sixty-eight billion, four hundred forty-nine million, five hundred ninety-one thousand, six hundred seventy-four".