318861426745 has 16 divisors (see below), whose sum is σ = 402980927040. Its totient is φ = 241538238144.

The previous prime is 318861426743. The next prime is 318861426749. The reversal of 318861426745 is 547624168813.

It is a cyclic number.

It is not a de Polignac number, because 318861426745 - 2¹ = 318861426743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (318861426743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 684559 + ... + 1051828.

It is an arithmetic number, because the mean of its divisors is an integer number (25186307940).

Almost surely, 2^318861426745 is an apocalyptic number.

It is an amenable number.

318861426745 is a deficient number, since it is larger than the sum of its proper divisors (84119500295).

318861426745 is a wasteful number, since it uses less digits than its factorization.

318861426745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1738344.

The product of its digits is 7741440, while the sum is 55.

The spelling of 318861426745 in words is "three hundred eighteen billion, eight hundred sixty-one million, four hundred twenty-six thousand, seven hundred forty-five".