16209680202149 has 32 divisors (see below), whose sum is σ = 19517681756160. Its totient is φ = 13151064744000.

The previous prime is 16209680202113. The next prime is 16209680202197. The reversal of 16209680202149 is 94120208690261.

It is a cyclic number.

It is not a de Polignac number, because 16209680202149 - 2¹⁶ = 16209680136613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16209680202097 and 16209680202106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16209680202109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1521887474 + ... + 1521898124.

It is an arithmetic number, because the mean of its divisors is an integer number (609927554880).

Almost surely, 2^{16209680202149} is an apocalyptic number.

16209680202149 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

16209680202149 is a deficient number, since it is larger than the sum of its proper divisors (3308001554011).

16209680202149 is a wasteful number, since it uses less digits than its factorization.

16209680202149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19761.

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 16209680202149 in words is "sixteen trillion, two hundred nine billion, six hundred eighty million, two hundred two thousand, one hundred forty-nine".