16600412405 has 4 divisors (see below), whose sum is σ = 19920494892. Its totient is φ = 13280329920.

The previous prime is 16600412359. The next prime is 16600412431. The reversal of 16600412405 is 50421400661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50421400661 = 2503 ⋅20144387.

It can be written as a sum of positive squares in 2 ways, for example, as 5084117809 + 11516294596 = 71303^2 + 107314^2 .

It is not a de Polignac number, because 16600412405 - 2⁸ = 16600412149 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 3 ways as a sum of consecutive naturals, for example, 1660041236 + ... + 1660041245.

It is an arithmetic number, because the mean of its divisors is an integer number (4980123723).

Almost surely, 2^16600412405 is an apocalyptic number.

It is an amenable number.

16600412405 is a deficient number, since it is larger than the sum of its proper divisors (3320082487).

16600412405 is an equidigital number, since it uses as much as digits as its factorization.

16600412405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3320082486.

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 16600412405 in words is "sixteen billion, six hundred million, four hundred twelve thousand, four hundred five".