16580858923 has 4 divisors (see below), whose sum is σ = 16620243808. Its totient is φ = 16541474040.

The previous prime is 16580858911. The next prime is 16580858929. The reversal of 16580858923 is 32985808561.

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 16580858923 - 2²⁵ = 16547304491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16580858929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19691811 + ... + 19692652.

It is an arithmetic number, because the mean of its divisors is an integer number (4155060952).

Almost surely, 2^16580858923 is an apocalyptic number.

16580858923 is a deficient number, since it is larger than the sum of its proper divisors (39384885).

16580858923 is an equidigital number, since it uses as much as digits as its factorization.

16580858923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39384884.

The product of its (nonzero) digits is 4147200, while the sum is 55.

The spelling of 16580858923 in words is "sixteen billion, five hundred eighty million, eight hundred fifty-eight thousand, nine hundred twenty-three".