87788688778 has 8 divisors (see below), whose sum is σ = 150494895072. Its totient is φ = 37623723756.

The previous prime is 87788688773. The next prime is 87788688791.

87788688778 is nontrivially palindromic in base 10.

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

It is not an unprimeable number, because it can be changed into a prime (87788688773) 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, 3135310300 + ... + 3135310327.

It is an arithmetic number, because the mean of its divisors is an integer number (18811861884).

Almost surely, 2^87788688778 is an apocalyptic number.

87788688778 is a deficient number, since it is larger than the sum of its proper divisors (62706206294).

87788688778 is a wasteful number, since it uses less digits than its factorization.

87788688778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6270620636.

The product of its digits is 3776446464, while the sum is 82.

The spelling of 87788688778 in words is "eighty-seven billion, seven hundred eighty-eight million, six hundred eighty-eight thousand, seven hundred seventy-eight".