16120281210049 has 9 divisors (see below), whose sum is σ = 16523217227811. Its totient is φ = 15726943019280.

The previous prime is 16120281210029. The next prime is 16120281210139. The reversal of 16120281210049 is 94001218202161.

The square root of 16120281210049 is 4015007.

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

It can be written as a sum of positive squares in only one way, i.e., 776765483649 + 15343515726400 = 881343^2 + 3917080^2 .

It is not a de Polignac number, because 16120281210049 - 2⁵ = 16120281210017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16120281210029) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 164566324 + ... + 164664250.

Almost surely, 2^{16120281210049} is an apocalyptic number.

16120281210049 is the 4015007-th square number.

16120281210049 is the 2007504-th centered octagonal number.

It is an amenable number.

16120281210049 is a deficient number, since it is larger than the sum of its proper divisors (402936017762).

16120281210049 is an frugal number, since it uses more digits than its factorization.

16120281210049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195936 (or 97968 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The spelling of 16120281210049 in words is "sixteen trillion, one hundred twenty billion, two hundred eighty-one million, two hundred ten thousand, forty-nine".