16463199481 has 9 divisors (see below), whose sum is σ = 17015512773. Its totient is φ = 15928279260.

The previous prime is 16463199383. The next prime is 16463199497. The reversal of 16463199481 is 18499136461.

The square root of 16463199481 is 128309.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 16463199481 - 2¹¹ = 16463197433 is a prime.

It is a super-2 number, since 2×16463199481² (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 (16463199581) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3975510 + ... + 3979648.

Almost surely, 2^16463199481 is an apocalyptic number.

16463199481 is the 128309-th square number.

16463199481 is the 64155-th centered octagonal number.

It is an amenable number.

16463199481 is a deficient number, since it is larger than the sum of its proper divisors (552313292).

16463199481 is an frugal number, since it uses more digits than its factorization.

16463199481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8340 (or 4170 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 52.

The spelling of 16463199481 in words is "sixteen billion, four hundred sixty-three million, one hundred ninety-nine thousand, four hundred eighty-one".