668241225755 has 4 divisors (see below), whose sum is σ = 801889470912. Its totient is φ = 534592980600.

The previous prime is 668241225733. The next prime is 668241225761. The reversal of 668241225755 is 557522142866.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 668241225755 - 2³⁶ = 599521749019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 668241225697 and 668241225706.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66824122571 + ... + 66824122580.

It is an arithmetic number, because the mean of its divisors is an integer number (200472367728).

Almost surely, 2^668241225755 is an apocalyptic number.

668241225755 is a deficient number, since it is larger than the sum of its proper divisors (133648245157).

668241225755 is a wasteful number, since it uses less digits than its factorization.

668241225755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133648245156.

The product of its digits is 8064000, while the sum is 53.

The spelling of 668241225755 in words is "six hundred sixty-eight billion, two hundred forty-one million, two hundred twenty-five thousand, seven hundred fifty-five".