16408546129 has 4 divisors (see below), whose sum is σ = 17272153840. Its totient is φ = 15544938420.

The previous prime is 16408546123. The next prime is 16408546139. The reversal of 16408546129 is 92164580461.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16408546129 - 2⁵ = 16408546097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16408546123) 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, 431803827 + ... + 431803864.

It is an arithmetic number, because the mean of its divisors is an integer number (4318038460).

Almost surely, 2^16408546129 is an apocalyptic number.

16408546129 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

16408546129 is a deficient number, since it is larger than the sum of its proper divisors (863607711).

16408546129 is an equidigital number, since it uses as much as digits as its factorization.

16408546129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863607710.

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 16408546129 in words is "sixteen billion, four hundred eight million, five hundred forty-six thousand, one hundred twenty-nine".