8261120000666 has 16 divisors (see below), whose sum is σ = 13357440184704. Its totient is φ = 3809237750064.

The previous prime is 8261120000657. The next prime is 8261120000677. The reversal of 8261120000666 is 6660000211628.

It is a super-2 number, since 2×8261120000666² (a number of 27 digits) contains 22 as substring.

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, 149424566 + ... + 149479841.

It is an arithmetic number, because the mean of its divisors is an integer number (834840011544).

Almost surely, 2^{8261120000666} is an apocalyptic number.

8261120000666 is a deficient number, since it is larger than the sum of its proper divisors (5096320184038).

8261120000666 is a wasteful number, since it uses less digits than its factorization.

8261120000666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298905485.

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 8261120000666 in words is "eight trillion, two hundred sixty-one billion, one hundred twenty million, six hundred sixty-six", and thus it is an aban number.