266041230061565 has 16 divisors (see below), whose sum is σ = 365005647816192. Its totient is φ = 182353720176384.

The previous prime is 266041230061531. The next prime is 266041230061601. The reversal of 266041230061565 is 565160032140662.

It is a cyclic number.

It is not a de Polignac number, because 266041230061565 - 2¹⁴ = 266041230045181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1553077004 + ... + 1553248293.

It is an arithmetic number, because the mean of its divisors is an integer number (22812852988512).

Almost surely, 2^{266041230061565} is an apocalyptic number.

It is an amenable number.

266041230061565 is a deficient number, since it is larger than the sum of its proper divisors (98964417754627).

266041230061565 is a wasteful number, since it uses less digits than its factorization.

266041230061565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3106327756.

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 266041230061565 in words is "two hundred sixty-six trillion, forty-one billion, two hundred thirty million, sixty-one thousand, five hundred sixty-five".