318555497457 has 6 divisors (see below), whose sum is σ = 460135718562. Its totient is φ = 212370331632.

The previous prime is 318555497419. The next prime is 318555497471. The reversal of 318555497457 is 754794555813.

318555497457 is a `hidden beast` number, since 3 + 1 + 8 + 5 + 554 + 9 + 74 + 5 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 170077059216 + 148478438241 = 412404^2 + 385329^2 .

It is not a de Polignac number, because 318555497457 - 2⁷ = 318555497329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 318555497394 and 318555497403.

It is not an unprimeable number, because it can be changed into a prime (318555487457) 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 5 ways as a sum of consecutive naturals, for example, 17697527628 + ... + 17697527645.

It is an arithmetic number, because the mean of its divisors is an integer number (76689286427).

Almost surely, 2^318555497457 is an apocalyptic number.

It is an amenable number.

318555497457 is a deficient number, since it is larger than the sum of its proper divisors (141580221105).

318555497457 is a wasteful number, since it uses less digits than its factorization.

318555497457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35395055279 (or 35395055276 counting only the distinct ones).

The product of its digits is 105840000, while the sum is 63.

The spelling of 318555497457 in words is "three hundred eighteen billion, five hundred fifty-five million, four hundred ninety-seven thousand, four hundred fifty-seven".