668848146338145 has 32 divisors (see below), whose sum is σ = 1117615398038784. Its totient is φ = 340925384448000.

The previous prime is 668848146338111. The next prime is 668848146338249. The reversal of 668848146338145 is 541833641848866.

It is not a de Polignac number, because 668848146338145 - 2⁴⁵ = 633663774249313 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 806700676 + ... + 807529365.

It is an arithmetic number, because the mean of its divisors is an integer number (34925481188712).

Almost surely, 2^{668848146338145} is an apocalyptic number.

It is an amenable number.

668848146338145 is a deficient number, since it is larger than the sum of its proper divisors (448767251700639).

668848146338145 is a wasteful number, since it uses less digits than its factorization.

668848146338145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614231273.

The product of its digits is 2548039680, while the sum is 75.

The spelling of 668848146338145 in words is "six hundred sixty-eight trillion, eight hundred forty-eight billion, one hundred forty-six million, three hundred thirty-eight thousand, one hundred forty-five".