16661056001527 has 4 divisors (see below), whose sum is σ = 19041206858896. Its totient is φ = 14280905144160.

The previous prime is 16661056001467. The next prime is 16661056001573. The reversal of 16661056001527 is 72510065016661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16661056001527 - 2²⁷ = 16660921783799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16661056001827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1190075428674 + ... + 1190075428687.

It is an arithmetic number, because the mean of its divisors is an integer number (4760301714724).

Almost surely, 2^{16661056001527} is an apocalyptic number.

16661056001527 is a deficient number, since it is larger than the sum of its proper divisors (2380150857369).

16661056001527 is an equidigital number, since it uses as much as digits as its factorization.

16661056001527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380150857368.

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 16661056001527 in words is "sixteen trillion, six hundred sixty-one billion, fifty-six million, one thousand, five hundred twenty-seven".