16243634463 has 16 divisors (see below), whose sum is σ = 25327838976. Its totient is φ = 9066214080.

The previous prime is 16243634443. The next prime is 16243634503. The reversal of 16243634463 is 36443634261.

It is a happy number.

It is not a de Polignac number, because 16243634463 - 2⁵ = 16243634431 is a prime.

It is a super-2 number, since 2×16243634463² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16243634443) 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, 8993358 + ... + 8995163.

It is an arithmetic number, because the mean of its divisors is an integer number (1582989936).

Almost surely, 2^16243634463 is an apocalyptic number.

16243634463 is a deficient number, since it is larger than the sum of its proper divisors (9084204513).

16243634463 is a wasteful number, since it uses less digits than its factorization.

16243634463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17988574.

The product of its digits is 746496, while the sum is 42.

The spelling of 16243634463 in words is "sixteen billion, two hundred forty-three million, six hundred thirty-four thousand, four hundred sixty-three".