67642490879 has 8 divisors (see below), whose sum is σ = 67806570000. Its totient is φ = 67478463936.

The previous prime is 67642490837. The next prime is 67642490893. The reversal of 67642490879 is 97809424676.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67642490879 - 2³² = 63347523583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67642496879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4154747 + ... + 4170995.

It is an arithmetic number, because the mean of its divisors is an integer number (8475821250).

Almost surely, 2^67642490879 is an apocalyptic number.

67642490879 is a deficient number, since it is larger than the sum of its proper divisors (164079121).

67642490879 is a wasteful number, since it uses less digits than its factorization.

67642490879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26089.

The product of its (nonzero) digits is 36578304, while the sum is 62.

The spelling of 67642490879 in words is "sixty-seven billion, six hundred forty-two million, four hundred ninety thousand, eight hundred seventy-nine".