67778648101 has 16 divisors (see below), whose sum is σ = 69572877696. Its totient is φ = 66004600896.

The previous prime is 67778648059. The next prime is 67778648123. The reversal of 67778648101 is 10184687776.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 67778648101 - 2⁷ = 67778647973 is a prime.

It is a super-3 number, since 3×67778648101³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67778642101) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 7105131 + ... + 7114663.

It is an arithmetic number, because the mean of its divisors is an integer number (4348304856).

Almost surely, 2^67778648101 is an apocalyptic number.

It is an amenable number.

67778648101 is a deficient number, since it is larger than the sum of its proper divisors (1794229595).

67778648101 is a wasteful number, since it uses less digits than its factorization.

67778648101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10572.

The product of its (nonzero) digits is 3161088, while the sum is 55.

The spelling of 67778648101 in words is "sixty-seven billion, seven hundred seventy-eight million, six hundred forty-eight thousand, one hundred one".