16263444436261 has 32 divisors (see below), whose sum is σ = 18827161637760. Its totient is φ = 13884473088000.

The previous prime is 16263444436223. The next prime is 16263444436319.

It is a happy number.

16263444436261 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 16263444436261 - 2¹³ = 16263444428069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16263444436199 and 16263444436208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16263444434261) 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 31 ways as a sum of consecutive naturals, for example, 209787775 + ... + 209865283.

It is an arithmetic number, because the mean of its divisors is an integer number (588348801180).

Almost surely, 2^{16263444436261} is an apocalyptic number.

16263444436261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16263444436261 is a deficient number, since it is larger than the sum of its proper divisors (2563717201499).

16263444436261 is a wasteful number, since it uses less digits than its factorization.

16263444436261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80005.

The product of its digits is 11943936, while the sum is 52.

The spelling of 16263444436261 in words is "sixteen trillion, two hundred sixty-three billion, four hundred forty-four million, four hundred thirty-six thousand, two hundred sixty-one".