648267516338 has 32 divisors (see below), whose sum is σ = 1109010386736. Its totient is φ = 281547307008.

The previous prime is 648267516331. The next prime is 648267516367. The reversal of 648267516338 is 833615762846.

It can be written as a sum of positive squares in 8 ways, for example, as 39925234969 + 608342281369 = 199813^2 + 779963^2 .

It is not an unprimeable number, because it can be changed into a prime (648267516331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2257070 + ... + 2528022.

Almost surely, 2^648267516338 is an apocalyptic number.

648267516338 is a deficient number, since it is larger than the sum of its proper divisors (460742870398).

648267516338 is a wasteful number, since it uses less digits than its factorization.

648267516338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276398.

The product of its digits is 34836480, while the sum is 59.

The spelling of 648267516338 in words is "six hundred forty-eight billion, two hundred sixty-seven million, five hundred sixteen thousand, three hundred thirty-eight".