16118161356049 has 3 divisors (see below), whose sum is σ = 16118165370793. Its totient is φ = 16118157341306.

The previous prime is 16118161356019. The next prime is 16118161356083. The reversal of 16118161356049 is 94065316181161.

The square root of 16118161356049 is 4014743.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 16118161356049 - 2¹³ = 16118161347857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16118161355987 and 16118161356005.

It is not an unprimeable number, because it can be changed into a prime (16118161356019) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 2007372 + ... + 6022114.

Almost surely, 2^{16118161356049} is an apocalyptic number.

16118161356049 is the 4014743-rd square number.

16118161356049 is the 2007372-nd centered octagonal number.

It is an amenable number.

16118161356049 is a deficient number, since it is larger than the sum of its proper divisors (4014744).

16118161356049 is an frugal number, since it uses more digits than its factorization.

16118161356049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8029486 (or 4014743 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 52.

The spelling of 16118161356049 in words is "sixteen trillion, one hundred eighteen billion, one hundred sixty-one million, three hundred fifty-six thousand, forty-nine".