318877161085 has 72 divisors (see below), whose sum is σ = 480337675776. Its totient is φ = 202402347840.

The previous prime is 318877161049. The next prime is 318877161121. The reversal of 318877161085 is 580161778813.

It is an interprime number because it is at equal distance from previous prime (318877161049) and next prime (318877161121).

It is not a de Polignac number, because 318877161085 - 2⁷ = 318877160957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3978072 + ... + 4057438.

It is an arithmetic number, because the mean of its divisors is an integer number (6671356608).

Almost surely, 2^318877161085 is an apocalyptic number.

318877161085 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

318877161085 is a deficient number, since it is larger than the sum of its proper divisors (161460514691).

318877161085 is a wasteful number, since it uses less digits than its factorization.

318877161085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79463 (or 79433 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 55.

The spelling of 318877161085 in words is "three hundred eighteen billion, eight hundred seventy-seven million, one hundred sixty-one thousand, eighty-five".