78877733777887 has 8 divisors (see below), whose sum is σ = 86084576497872. Its totient is φ = 71676914332800.

The previous prime is 78877733777863. The next prime is 78877733777963.

78877733777887 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78877733777887 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78877733777795 and 78877733777804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78877733727887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1505791338 + ... + 1505843719.

It is an arithmetic number, because the mean of its divisors is an integer number (10760572062234).

Almost surely, 2^{78877733777887} is an apocalyptic number.

78877733777887 is a deficient number, since it is larger than the sum of its proper divisors (7206842719985).

78877733777887 is a wasteful number, since it uses less digits than its factorization.

78877733777887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3011637449.

The product of its digits is 212513624064, while the sum is 94.

The spelling of 78877733777887 in words is "seventy-eight trillion, eight hundred seventy-seven billion, seven hundred thirty-three million, seven hundred seventy-seven thousand, eight hundred eighty-seven".