16942209405 has 32 divisors (see below), whose sum is σ = 29753326080. Its totient is φ = 8163996480.

The previous prime is 16942209391. The next prime is 16942209421. The reversal of 16942209405 is 50490224961.

It is not a de Polignac number, because 16942209405 - 2²¹ = 16940112253 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 288075 + ... + 341864.

It is an arithmetic number, because the mean of its divisors is an integer number (929791440).

Almost surely, 2^16942209405 is an apocalyptic number.

16942209405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16942209405 is a deficient number, since it is larger than the sum of its proper divisors (12811116675).

16942209405 is a wasteful number, since it uses less digits than its factorization.

16942209405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630121.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 16942209405 in words is "sixteen billion, nine hundred forty-two million, two hundred nine thousand, four hundred five".