666750527546612 has 24 divisors (see below), whose sum is σ = 1167180946156680. Its totient is φ = 333270259660800.

The previous prime is 666750527546561. The next prime is 666750527546657. The reversal of 666750527546612 is 216645725057666.

It can be written as a sum of positive squares in 4 ways, for example, as 299873432457316 + 366877095089296 = 17316854^2 + 19154036^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1310757668 + ... + 1311266244.

It is an arithmetic number, because the mean of its divisors is an integer number (48632539423195).

Almost surely, 2^{666750527546612} is an apocalyptic number.

It is an amenable number.

666750527546612 is a deficient number, since it is larger than the sum of its proper divisors (500430418610068).

666750527546612 is a wasteful number, since it uses less digits than its factorization.

666750527546612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611171 (or 611169 counting only the distinct ones).

The product of its (nonzero) digits is 762048000, while the sum is 68.

The spelling of 666750527546612 in words is "six hundred sixty-six trillion, seven hundred fifty billion, five hundred twenty-seven million, five hundred forty-six thousand, six hundred twelve".