16585145971 has 8 divisors (see below), whose sum is σ = 16916318640. Its totient is φ = 16255642368.

The previous prime is 16585145963. The next prime is 16585145981. The reversal of 16585145971 is 17954158561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16585145971 - 2³ = 16585145963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16585145981) 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, 397186 + ... + 436951.

It is an arithmetic number, because the mean of its divisors is an integer number (2114539830).

Almost surely, 2^16585145971 is an apocalyptic number.

16585145971 is a deficient number, since it is larger than the sum of its proper divisors (331172669).

16585145971 is an equidigital number, since it uses as much as digits as its factorization.

16585145971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834533.

The product of its digits is 1512000, while the sum is 52.

The spelling of 16585145971 in words is "sixteen billion, five hundred eighty-five million, one hundred forty-five thousand, nine hundred seventy-one".