16486863506 has 4 divisors (see below), whose sum is σ = 24730295262. Its totient is φ = 8243431752.

The previous prime is 16486863499. The next prime is 16486863529. The reversal of 16486863506 is 60536868461.

16486863506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60536868461 = 103 ⋅587736587.

It can be written as a sum of positive squares in only one way, i.e., 11676747481 + 4810116025 = 108059^2 + 69355^2 .

It is a super-2 number, since 2×16486863506² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4121715875 + ... + 4121715878.

Almost surely, 2^16486863506 is an apocalyptic number.

16486863506 is a deficient number, since it is larger than the sum of its proper divisors (8243431756).

16486863506 is an equidigital number, since it uses as much as digits as its factorization.

16486863506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8243431755.

The product of its (nonzero) digits is 4976640, while the sum is 53.

The spelling of 16486863506 in words is "sixteen billion, four hundred eighty-six million, eight hundred sixty-three thousand, five hundred six".