16155561049 has 8 divisors (see below), whose sum is σ = 16254756000. Its totient is φ = 16056465792.

The previous prime is 16155561047. The next prime is 16155561083. The reversal of 16155561049 is 94016555161.

16155561049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16155561049 - 2¹ = 16155561047 is a prime.

It is a super-2 number, since 2×16155561049² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16155560996 and 16155561014.

It is not an unprimeable number, because it can be changed into a prime (16155561041) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 314242 + ... + 362020.

It is an arithmetic number, because the mean of its divisors is an integer number (2031844500).

Almost surely, 2^16155561049 is an apocalyptic number.

It is an amenable number.

16155561049 is a deficient number, since it is larger than the sum of its proper divisors (99194951).

16155561049 is a wasteful number, since it uses less digits than its factorization.

16155561049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49847.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 16155561049 in words is "sixteen billion, one hundred fifty-five million, five hundred sixty-one thousand, forty-nine".