10661666100585 has 32 divisors (see below), whose sum is σ = 17343464411520. Its totient is φ = 5591344396800.

The previous prime is 10661666100557. The next prime is 10661666100643. The reversal of 10661666100585 is 58500166616601.

It is not a de Polignac number, because 10661666100585 - 2⁶ = 10661666100521 is a prime.

It is a super-2 number, since 2×10661666100585² (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 31 ways as a sum of consecutive naturals, for example, 1356181 + ... + 4812749.

It is an arithmetic number, because the mean of its divisors is an integer number (541983262860).

Almost surely, 2^{10661666100585} is an apocalyptic number.

10661666100585 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10661666100585 is a deficient number, since it is larger than the sum of its proper divisors (6681798310935).

10661666100585 is a wasteful number, since it uses less digits than its factorization.

10661666100585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3460009.

The product of its (nonzero) digits is 1555200, while the sum is 51.

The spelling of 10661666100585 in words is "ten trillion, six hundred sixty-one billion, six hundred sixty-six million, one hundred thousand, five hundred eighty-five".