67667841954 has 24 divisors (see below), whose sum is σ = 154330166640. Its totient is φ = 21368792088.

The previous prime is 67667841953. The next prime is 67667841961. The reversal of 67667841954 is 45914876676.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 67667841891 and 67667841900.

It is not an unprimeable number, because it can be changed into a prime (67667841953) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 98929252 + ... + 98929935.

It is an arithmetic number, because the mean of its divisors is an integer number (6430423610).

Almost surely, 2^67667841954 is an apocalyptic number.

67667841954 is an abundant number, since it is smaller than the sum of its proper divisors (86662324686).

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

67667841954 is a wasteful number, since it uses less digits than its factorization.

67667841954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197859214 (or 197859211 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 63.

The spelling of 67667841954 in words is "sixty-seven billion, six hundred sixty-seven million, eight hundred forty-one thousand, nine hundred fifty-four".