16454443265 has 16 divisors (see below), whose sum is σ = 21503134800. Its totient is φ = 12014441472.

The previous prime is 16454443241. The next prime is 16454443267. The reversal of 16454443265 is 56234445461.

It can be written as a sum of positive squares in 8 ways, for example, as 2156023489 + 14298419776 = 46433^2 + 119576^2 .

It is a cyclic number.

It is not a de Polignac number, because 16454443265 - 2²⁸ = 16186007809 is a prime.

It is a super-2 number, since 2×16454443265² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16454443267) 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, 1416380 + ... + 1427949.

It is an arithmetic number, because the mean of its divisors is an integer number (1343945925).

Almost surely, 2^16454443265 is an apocalyptic number.

It is an amenable number.

16454443265 is a deficient number, since it is larger than the sum of its proper divisors (5048691535).

16454443265 is a wasteful number, since it uses less digits than its factorization.

16454443265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2844436.

The product of its digits is 1382400, while the sum is 44.

The spelling of 16454443265 in words is "sixteen billion, four hundred fifty-four million, four hundred forty-three thousand, two hundred sixty-five".