10666505561004 has 72 divisors (see below), whose sum is σ = 28148352191232. Its totient is φ = 3399281566560.

The previous prime is 10666505560987. The next prime is 10666505561011. The reversal of 10666505561004 is 40016550566601.

It is a super-2 number, since 2×10666505561004² (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 23 ways as a sum of consecutive naturals, for example, 1367512 + ... + 4816959.

Almost surely, 2^{10666505561004} is an apocalyptic number.

It is an amenable number.

10666505561004 is an abundant number, since it is smaller than the sum of its proper divisors (17481846630228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10666505561004 is a wasteful number, since it uses less digits than its factorization.

10666505561004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6186587 (or 6186582 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The spelling of 10666505561004 in words is "ten trillion, six hundred sixty-six billion, five hundred five million, five hundred sixty-one thousand, four".