16243044034261 has 12 divisors (see below), whose sum is σ = 18030695976972. Its totient is φ = 14620201640000.

The previous prime is 16243044034253. The next prime is 16243044034289.

16243044034261 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 9056301778161 + 7186742256100 = 3009369^2 + 2680810^2 .

It is not a de Polignac number, because 16243044034261 - 2³ = 16243044034253 is a prime.

It is a super-2 number, since 2×16243044034261² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16243044034291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 664542400 + ... + 664566841.

It is an arithmetic number, because the mean of its divisors is an integer number (1502557998081).

Almost surely, 2^{16243044034261} is an apocalyptic number.

16243044034261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16243044034261 is a deficient number, since it is larger than the sum of its proper divisors (1787651942711).

16243044034261 is a wasteful number, since it uses less digits than its factorization.

16243044034261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329109364 (or 1329109353 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 40.

It can be divided in two parts, 1624304 and 4034261, that added together give a palindrome (5658565).

The spelling of 16243044034261 in words is "sixteen trillion, two hundred forty-three billion, forty-four million, thirty-four thousand, two hundred sixty-one".