218318703875 has 8 divisors (see below), whose sum is σ = 272461742592. Its totient is φ = 174654963000.

The previous prime is 218318703853. The next prime is 218318703877. The reversal of 218318703875 is 578307813812.

It is not a de Polignac number, because 218318703875 - 2¹² = 218318699779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (218318703877) 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, 873274691 + ... + 873274940.

It is an arithmetic number, because the mean of its divisors is an integer number (34057717824).

Almost surely, 2^218318703875 is an apocalyptic number.

218318703875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

218318703875 is a deficient number, since it is larger than the sum of its proper divisors (54143038717).

218318703875 is an equidigital number, since it uses as much as digits as its factorization.

218318703875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746549646 (or 1746549636 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 53.

The spelling of 218318703875 in words is "two hundred eighteen billion, three hundred eighteen million, seven hundred three thousand, eight hundred seventy-five".