16447397419 has 16 divisors (see below), whose sum is σ = 16790469696. Its totient is φ = 16108848000.

The previous prime is 16447397413. The next prime is 16447397429. The reversal of 16447397419 is 91479374461.

It is a cyclic number.

It is not a de Polignac number, because 16447397419 - 2³ = 16447397411 is a prime.

It is a super-2 number, since 2×16447397419² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16447397419.

It is not an unprimeable number, because it can be changed into a prime (16447397411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3599074 + ... + 3603640.

It is an arithmetic number, because the mean of its divisors is an integer number (1049404356).

Almost surely, 2^16447397419 is an apocalyptic number.

16447397419 is a deficient number, since it is larger than the sum of its proper divisors (343072277).

16447397419 is a wasteful number, since it uses less digits than its factorization.

16447397419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5046.

The product of its digits is 4572288, while the sum is 55.

The spelling of 16447397419 in words is "sixteen billion, four hundred forty-seven million, three hundred ninety-seven thousand, four hundred nineteen".