16214456897 has 8 divisors (see below), whose sum is σ = 16666594344. Its totient is φ = 15767734528.

The previous prime is 16214456893. The next prime is 16214456927. The reversal of 16214456897 is 79865441261.

It is a happy number.

It is a Cunningham number, because it is equal to 127336²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 16214456896 = 1^2 + 127336^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16214456897 - 2² = 16214456893 is a prime.

It is a super-2 number, since 2×16214456897² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16214456893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1347698 + ... + 1359675.

It is an arithmetic number, because the mean of its divisors is an integer number (2083324293).

Almost surely, 2^16214456897 is an apocalyptic number.

It is an amenable number.

16214456897 is a deficient number, since it is larger than the sum of its proper divisors (452137447).

16214456897 is a wasteful number, since it uses less digits than its factorization.

16214456897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2707539.

The product of its digits is 2903040, while the sum is 53.

The spelling of 16214456897 in words is "sixteen billion, two hundred fourteen million, four hundred fifty-six thousand, eight hundred ninety-seven".