67771870069 has 4 divisors (see below), whose sum is σ = 67823252640. Its totient is φ = 67720487500.

The previous prime is 67771870057. The next prime is 67771870121. The reversal of 67771870069 is 96007817776.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67771870069 - 2⁷ = 67771869941 is a prime.

It is a super-2 number, since 2×67771870069² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67771869995 and 67771870022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67771870169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25689307 + ... + 25691944.

It is an arithmetic number, because the mean of its divisors is an integer number (16955813160).

Almost surely, 2^67771870069 is an apocalyptic number.

It is an amenable number.

67771870069 is a deficient number, since it is larger than the sum of its proper divisors (51382571).

67771870069 is a wasteful number, since it uses less digits than its factorization.

67771870069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51382570.

The product of its (nonzero) digits is 6223392, while the sum is 58.

The spelling of 67771870069 in words is "sixty-seven billion, seven hundred seventy-one million, eight hundred seventy thousand, sixty-nine".