1585790108666 has 16 divisors (see below), whose sum is σ = 2572195222656. Its totient is φ = 730376419776.

The previous prime is 1585790108659. The next prime is 1585790108677. The reversal of 1585790108666 is 6668010975851.

It is a junction number, because it is equal to n+sod(n) for n = 1585790108599 and 1585790108608.

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, 496178036 + ... + 496181231.

It is an arithmetic number, because the mean of its divisors is an integer number (160762201416).

Almost surely, 2^{1585790108666} is an apocalyptic number.

1585790108666 is a deficient number, since it is larger than the sum of its proper divisors (986405113990).

1585790108666 is a wasteful number, since it uses less digits than its factorization.

1585790108666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992359333.

The product of its (nonzero) digits is 21772800, while the sum is 62.

The spelling of 1585790108666 in words is "one trillion, five hundred eighty-five billion, seven hundred ninety million, one hundred eight thousand, six hundred sixty-six".