67647276442 has 4 divisors (see below), whose sum is σ = 101470914666. Its totient is φ = 33823638220.

The previous prime is 67647276427. The next prime is 67647276461. The reversal of 67647276442 is 24467274676.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 62769790521 + 4877485921 = 250539^2 + 69839^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 16911819109 + ... + 16911819112.

Almost surely, 2^67647276442 is an apocalyptic number.

67647276442 is a deficient number, since it is larger than the sum of its proper divisors (33823638224).

67647276442 is a wasteful number, since it uses less digits than its factorization.

67647276442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33823638223.

The product of its digits is 18966528, while the sum is 55.

The spelling of 67647276442 in words is "sixty-seven billion, six hundred forty-seven million, two hundred seventy-six thousand, four hundred forty-two".