78868858895 has 8 divisors (see below), whose sum is σ = 94644652704. Its totient is φ = 63093739104.

The previous prime is 78868858879. The next prime is 78868858919. The reversal of 78868858895 is 59885886887.

It is a Cunningham number, because it is equal to 280836²-1.

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

It is a cyclic number.

It is not a de Polignac number, because 78868858895 - 2⁴ = 78868858879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140417 + ... + 421253.

It is an arithmetic number, because the mean of its divisors is an integer number (11830581588).

Almost surely, 2^78868858895 is an apocalyptic number.

78868858895 is a deficient number, since it is larger than the sum of its proper divisors (15775793809).

78868858895 is a wasteful number, since it uses less digits than its factorization.

78868858895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337009.

The product of its digits is 2477260800, while the sum is 80.

The spelling of 78868858895 in words is "seventy-eight billion, eight hundred sixty-eight million, eight hundred fifty-eight thousand, eight hundred ninety-five".