16261045219 has 4 divisors (see below), whose sum is σ = 16657656120. Its totient is φ = 15864434320.

The previous prime is 16261045217. The next prime is 16261045223. The reversal of 16261045219 is 91254016261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16261045219 - 2¹ = 16261045217 is a prime.

It is a super-2 number, since 2×16261045219² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16261045217) 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, 198305389 + ... + 198305470.

It is an arithmetic number, because the mean of its divisors is an integer number (4164414030).

Almost surely, 2^16261045219 is an apocalyptic number.

16261045219 is a deficient number, since it is larger than the sum of its proper divisors (396610901).

16261045219 is an equidigital number, since it uses as much as digits as its factorization.

16261045219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396610900.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 16261045219 in words is "sixteen billion, two hundred sixty-one million, forty-five thousand, two hundred nineteen".