67999299976 has 8 divisors (see below), whose sum is σ = 127498687470. Its totient is φ = 33999649984.

The previous prime is 67999299959. The next prime is 67999300027.

67999299976 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 66705459076 + 1293840900 = 258274^2 + 35970^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 67999299976.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4249956241 + ... + 4249956256.

Almost surely, 2^67999299976 is an apocalyptic number.

It is an amenable number.

67999299976 is a deficient number, since it is larger than the sum of its proper divisors (59499387494).

67999299976 is a wasteful number, since it uses less digits than its factorization.

67999299976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8499912503 (or 8499912499 counting only the distinct ones).

The product of its digits is 1874923848, while the sum is 82.

The spelling of 67999299976 in words is "sixty-seven billion, nine hundred ninety-nine million, two hundred ninety-nine thousand, nine hundred seventy-six".