78518106851 has 8 divisors (see below), whose sum is σ = 79766818560. Its totient is φ = 77278749192.

The previous prime is 78518106809. The next prime is 78518106871. The reversal of 78518106851 is 15860181587.

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 78518106851 - 2¹⁴ = 78518090467 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78518106851.

It is not an unprimeable number, because it can be changed into a prime (78518106871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2321591 + ... + 2355168.

It is an arithmetic number, because the mean of its divisors is an integer number (9970852320).

Almost surely, 2^78518106851 is an apocalyptic number.

78518106851 is a deficient number, since it is larger than the sum of its proper divisors (1248711709).

78518106851 is a wasteful number, since it uses less digits than its factorization.

78518106851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4677025.

The product of its (nonzero) digits is 537600, while the sum is 50.

The spelling of 78518106851 in words is "seventy-eight billion, five hundred eighteen million, one hundred six thousand, eight hundred fifty-one".