918067478985 has 36 divisors (see below), whose sum is σ = 1606917475332. Its totient is φ = 484881989184.

The previous prime is 918067478959. The next prime is 918067478987. The reversal of 918067478985 is 589874760819.

918067478985 is a `hidden beast` number, since 9 + 1 + 8 + 0 + 67 + 478 + 98 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 663449346576 + 254618132409 = 814524^2 + 504597^2 .

It is not a de Polignac number, because 918067478985 - 2⁵ = 918067478953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (918067478987) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 484114 + ... + 1438923.

It is an arithmetic number, because the mean of its divisors is an integer number (44636596537).

Almost surely, 2^918067478985 is an apocalyptic number.

It is an amenable number.

918067478985 is a deficient number, since it is larger than the sum of its proper divisors (688849996347).

918067478985 is a wasteful number, since it uses less digits than its factorization.

918067478985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1923254 (or 1923148 counting only the distinct ones).

The product of its (nonzero) digits is 243855360, while the sum is 72.

The spelling of 918067478985 in words is "nine hundred eighteen billion, sixty-seven million, four hundred seventy-eight thousand, nine hundred eighty-five".