668048873525 has 12 divisors (see below), whose sum is σ = 903687931104. Its totient is φ = 485853726000.

The previous prime is 668048873521. The next prime is 668048873539. The reversal of 668048873525 is 525378840866.

It is a happy number.

It is not a de Polignac number, because 668048873525 - 2² = 668048873521 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668048873521) 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 11 ways as a sum of consecutive naturals, for example, 1214634041 + ... + 1214634590.

It is an arithmetic number, because the mean of its divisors is an integer number (75307327592).

Almost surely, 2^668048873525 is an apocalyptic number.

It is an amenable number.

668048873525 is a deficient number, since it is larger than the sum of its proper divisors (235639057579).

668048873525 is a wasteful number, since it uses less digits than its factorization.

668048873525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429268652 (or 2429268647 counting only the distinct ones).

The product of its (nonzero) digits is 77414400, while the sum is 62.

The spelling of 668048873525 in words is "six hundred sixty-eight billion, forty-eight million, eight hundred seventy-three thousand, five hundred twenty-five".