78067788776087 has 16 divisors (see below), whose sum is σ = 85923740604672. Its totient is φ = 70338393121920.

The previous prime is 78067788776071. The next prime is 78067788776227.

It is a happy number.

78067788776087 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 78067788776087 - 2⁴ = 78067788776071 is a prime.

It is a super-3 number, since 3×78067788776087³ (a number of 43 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 (78067788776027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18697268 + ... + 22488294.

It is an arithmetic number, because the mean of its divisors is an integer number (5370233787792).

Almost surely, 2^{78067788776087} is an apocalyptic number.

78067788776087 is a deficient number, since it is larger than the sum of its proper divisors (7855951828585).

78067788776087 is a wasteful number, since it uses less digits than its factorization.

78067788776087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3807718.

The product of its (nonzero) digits is 17348050944, while the sum is 86.

The spelling of 78067788776087 in words is "seventy-eight trillion, sixty-seven billion, seven hundred eighty-eight million, seven hundred seventy-six thousand, eighty-seven".