67161006722 has 4 divisors (see below), whose sum is σ = 100741510086. Its totient is φ = 33580503360.

The previous prime is 67161006709. The next prime is 67161006853. The reversal of 67161006722 is 22760016176.

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., 59814974041 + 7346032681 = 244571^2 + 85709^2 .

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, 16790251679 + ... + 16790251682.

Almost surely, 2^67161006722 is an apocalyptic number.

67161006722 is a deficient number, since it is larger than the sum of its proper divisors (33580503364).

67161006722 is a wasteful number, since it uses less digits than its factorization.

67161006722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33580503363.

The product of its (nonzero) digits is 42336, while the sum is 38.

The spelling of 67161006722 in words is "sixty-seven billion, one hundred sixty-one million, six thousand, seven hundred twenty-two".