16661052727445 has 32 divisors (see below), whose sum is σ = 22912978845696. Its totient is φ = 11392957800000.

The previous prime is 16661052727379. The next prime is 16661052727463. The reversal of 16661052727445 is 54472725016661.

It is not a de Polignac number, because 16661052727445 - 2¹⁰ = 16661052726421 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 433512380 + ... + 433550810.

It is an arithmetic number, because the mean of its divisors is an integer number (716030588928).

Almost surely, 2^{16661052727445} is an apocalyptic number.

It is an amenable number.

16661052727445 is a deficient number, since it is larger than the sum of its proper divisors (6251926118251).

16661052727445 is a wasteful number, since it uses less digits than its factorization.

16661052727445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72561.

The product of its (nonzero) digits is 16934400, while the sum is 56.

The spelling of 16661052727445 in words is "sixteen trillion, six hundred sixty-one billion, fifty-two million, seven hundred twenty-seven thousand, four hundred forty-five".