87786868778 has 8 divisors (see below), whose sum is σ = 150491775072. Its totient is φ = 37622943756.

The previous prime is 87786868759. The next prime is 87786868783.

87786868778 is nontrivially palindromic in base 10.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3135245300 + ... + 3135245327.

It is an arithmetic number, because the mean of its divisors is an integer number (18811471884).

Almost surely, 2^87786868778 is an apocalyptic number.

87786868778 is a deficient number, since it is larger than the sum of its proper divisors (62704906294).

87786868778 is a wasteful number, since it uses less digits than its factorization.

87786868778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6270490636.

The product of its digits is 2832334848, while the sum is 80.

The spelling of 87786868778 in words is "eighty-seven billion, seven hundred eighty-six million, eight hundred sixty-eight thousand, seven hundred seventy-eight".