16351648538 has 16 divisors (see below), whose sum is σ = 24648213600. Its totient is φ = 8135614896.

The previous prime is 16351648531. The next prime is 16351648541. The reversal of 16351648538 is 83584615361.

It is not an unprimeable number, because it can be changed into a prime (16351648531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 991988 + ... + 1008336.

It is an arithmetic number, because the mean of its divisors is an integer number (1540513350).

Almost surely, 2^16351648538 is an apocalyptic number.

16351648538 is a deficient number, since it is larger than the sum of its proper divisors (8296565062).

16351648538 is a wasteful number, since it uses less digits than its factorization.

16351648538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18781.

The product of its digits is 2073600, while the sum is 50.

The spelling of 16351648538 in words is "sixteen billion, three hundred fifty-one million, six hundred forty-eight thousand, five hundred thirty-eight".