16563513842 has 16 divisors (see below), whose sum is σ = 25108641792. Its totient is φ = 8194108800.

The previous prime is 16563513839. The next prime is 16563513851. The reversal of 16563513842 is 24831536561.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 16563513793 and 16563513802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202178 + ... + 272034.

It is an arithmetic number, because the mean of its divisors is an integer number (1569290112).

Almost surely, 2^16563513842 is an apocalyptic number.

16563513842 is a deficient number, since it is larger than the sum of its proper divisors (8545127950).

16563513842 is a wasteful number, since it uses less digits than its factorization.

16563513842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71113.

The product of its digits is 518400, while the sum is 44.

The spelling of 16563513842 in words is "sixteen billion, five hundred sixty-three million, five hundred thirteen thousand, eight hundred forty-two".