1664011412586 has 16 divisors (see below), whose sum is σ = 3697803139200. Its totient is φ = 554670470844.

The previous prime is 1664011412537. The next prime is 1664011412587. The reversal of 1664011412586 is 6852141104661.

1664011412586 is a `hidden beast` number, since 1 + 6 + 6 + 40 + 1 + 14 + 12 + 586 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1664011412587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15407513026 + ... + 15407513133.

It is an arithmetic number, because the mean of its divisors is an integer number (231112696200).

Almost surely, 2^{1664011412586} is an apocalyptic number.

1664011412586 is an abundant number, since it is smaller than the sum of its proper divisors (2033791726614).

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

1664011412586 is a wasteful number, since it uses less digits than its factorization.

1664011412586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30815026170 (or 30815026164 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 1664011412586 in words is "one trillion, six hundred sixty-four billion, eleven million, four hundred twelve thousand, five hundred eighty-six".