266137242731663 has 8 divisors (see below), whose sum is σ = 268942304439600. Its totient is φ = 263338788944448.

The previous prime is 266137242731653. The next prime is 266137242731741. The reversal of 266137242731663 is 366137242731662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266137242731663 is a prime.

It is a super-2 number, since 2×266137242731663² (a number of 30 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 (266137242731653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1651899206 + ... + 1652060307.

It is an arithmetic number, because the mean of its divisors is an integer number (33617788054950).

Almost surely, 2^{266137242731663} is an apocalyptic number.

266137242731663 is a deficient number, since it is larger than the sum of its proper divisors (2805061707937).

266137242731663 is a wasteful number, since it uses less digits than its factorization.

266137242731663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3303960361.

The product of its digits is 54867456, while the sum is 59.

Subtracting 266137242731663 from its reverse (366137242731662), we obtain a palindrome (99999999999999).

The spelling of 266137242731663 in words is "two hundred sixty-six trillion, one hundred thirty-seven billion, two hundred forty-two million, seven hundred thirty-one thousand, six hundred sixty-three".