718108845851385 has 24 divisors (see below), whose sum is σ = 1244727833249160. Its totient is φ = 382989589446912.

The previous prime is 718108845851323. The next prime is 718108845851431. The reversal of 718108845851385 is 583158548801817.

718108845851385 is a `hidden beast` number, since 7 + 1 + 8 + 1 + 0 + 8 + 8 + 4 + 585 + 1 + 38 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 60201274066704 + 657907571784681 = 7758948^2 + 25649709^2 .

It is not a de Polignac number, because 718108845851385 - 2¹⁷ = 718108845720313 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27660030 + ... + 46917959.

It is an arithmetic number, because the mean of its divisors is an integer number (51863659718715).

Almost surely, 2^{718108845851385} is an apocalyptic number.

It is an amenable number.

718108845851385 is a deficient number, since it is larger than the sum of its proper divisors (526618987397775).

718108845851385 is a wasteful number, since it uses less digits than its factorization.

718108845851385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74791977 (or 74791974 counting only the distinct ones).

The product of its (nonzero) digits is 344064000, while the sum is 72.

The spelling of 718108845851385 in words is "seven hundred eighteen trillion, one hundred eight billion, eight hundred forty-five million, eight hundred fifty-one thousand, three hundred eighty-five".