618268172784 has 20 divisors (see below), whose sum is σ = 1597192779816. Its totient is φ = 206089390912.

The previous prime is 618268172777. The next prime is 618268172789. The reversal of 618268172784 is 487271862816.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618268172789) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6440293419 + ... + 6440293514.

Almost surely, 2^618268172784 is an apocalyptic number.

It is an amenable number.

618268172784 is an abundant number, since it is smaller than the sum of its proper divisors (978924607032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

618268172784 is a wasteful number, since it uses less digits than its factorization.

618268172784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12880586944 (or 12880586938 counting only the distinct ones).

The product of its digits is 14450688, while the sum is 60.

The spelling of 618268172784 in words is "six hundred eighteen billion, two hundred sixty-eight million, one hundred seventy-two thousand, seven hundred eighty-four".