16265056261 has 8 divisors (see below), whose sum is σ = 16992516600. Its totient is φ = 15548702400.

The previous prime is 16265056237. The next prime is 16265056273.

16265056261 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 8119091236 + 8145965025 = 90106^2 + 90255^2 .

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 16265056261 - 2⁷ = 16265056133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16265054261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2773626 + ... + 2779483.

It is an arithmetic number, because the mean of its divisors is an integer number (2124064575).

Almost surely, 2^16265056261 is an apocalyptic number.

It is an amenable number.

16265056261 is a deficient number, since it is larger than the sum of its proper divisors (727460339).

16265056261 is a wasteful number, since it uses less digits than its factorization.

16265056261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5553239.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 16265056261 in words is "sixteen billion, two hundred sixty-five million, fifty-six thousand, two hundred sixty-one".