16549494562 has 16 divisors (see below), whose sum is σ = 25103554560. Its totient is φ = 8181802368.

The previous prime is 16549494541. The next prime is 16549494593. The reversal of 16549494562 is 26549494561.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171639 + ... + 250117.

It is an arithmetic number, because the mean of its divisors is an integer number (1568972160).

Almost surely, 2^16549494562 is an apocalyptic number.

16549494562 is a deficient number, since it is larger than the sum of its proper divisors (8554059998).

16549494562 is a wasteful number, since it uses less digits than its factorization.

16549494562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79665.

The product of its digits is 9331200, while the sum is 55.

Subtracting 16549494562 from its reverse (26549494561), we obtain a palindrome (9999999999).

The spelling of 16549494562 in words is "sixteen billion, five hundred forty-nine million, four hundred ninety-four thousand, five hundred sixty-two".