16086421909 has 4 divisors (see below), whose sum is σ = 16167258400. Its totient is φ = 16005585420.

The previous prime is 16086421907. The next prime is 16086421937. The reversal of 16086421909 is 90912468061.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90912468061 = 47431 ⋅1916731.

It is a cyclic number.

It is not a de Polignac number, because 16086421909 - 2¹ = 16086421907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16086421903) 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, 40417947 + ... + 40418344.

It is an arithmetic number, because the mean of its divisors is an integer number (4041814600).

Almost surely, 2^16086421909 is an apocalyptic number.

It is an amenable number.

16086421909 is a deficient number, since it is larger than the sum of its proper divisors (80836491).

16086421909 is an equidigital number, since it uses as much as digits as its factorization.

16086421909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80836490.

The product of its (nonzero) digits is 186624, while the sum is 46.

The spelling of 16086421909 in words is "sixteen billion, eighty-six million, four hundred twenty-one thousand, nine hundred nine".