16557612466771 has 4 divisors (see below), whose sum is σ = 16557677719344. Its totient is φ = 16557547214200.

The previous prime is 16557612466741. The next prime is 16557612466799. The reversal of 16557612466771 is 17766421675561.

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 16557612466771 - 2⁵ = 16557612466739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16557612466741) 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, 32244175 + ... + 32753656.

It is an arithmetic number, because the mean of its divisors is an integer number (4139419429836).

Almost surely, 2^{16557612466771} is an apocalyptic number.

16557612466771 is a deficient number, since it is larger than the sum of its proper divisors (65252573).

16557612466771 is an equidigital number, since it uses as much as digits as its factorization.

16557612466771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65252572.

The product of its digits is 88905600, while the sum is 64.

The spelling of 16557612466771 in words is "sixteen trillion, five hundred fifty-seven billion, six hundred twelve million, four hundred sixty-six thousand, seven hundred seventy-one".