318875468881 has 4 divisors (see below), whose sum is σ = 318931018164. Its totient is φ = 318819919600.

The previous prime is 318875468851. The next prime is 318875468969. The reversal of 318875468881 is 188864578813.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60918137856 + 257957331025 = 246816^2 + 507895^2 .

It is a cyclic number.

It is not a de Polignac number, because 318875468881 - 2⁷ = 318875468753 is a prime.

It is a super-2 number, since 2×318875468881² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (318875468831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27766030 + ... + 27777511.

It is an arithmetic number, because the mean of its divisors is an integer number (79732754541).

Almost surely, 2^318875468881 is an apocalyptic number.

It is an amenable number.

318875468881 is a deficient number, since it is larger than the sum of its proper divisors (55549283).

318875468881 is an equidigital number, since it uses as much as digits as its factorization.

318875468881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55549282.

The product of its digits is 82575360, while the sum is 67.

The spelling of 318875468881 in words is "three hundred eighteen billion, eight hundred seventy-five million, four hundred sixty-eight thousand, eight hundred eighty-one".