266522220761 has 8 divisors (see below), whose sum is σ = 267218952000. Its totient is φ = 265825779120.

The previous prime is 266522220749. The next prime is 266522220773. The reversal of 266522220761 is 167022225662.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (266522220749) and next prime (266522220773).

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-266522220761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266522420761) 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, 1836116 + ... + 1975946.

It is an arithmetic number, because the mean of its divisors is an integer number (33402369000).

Almost surely, 2^266522220761 is an apocalyptic number.

It is an amenable number.

266522220761 is a deficient number, since it is larger than the sum of its proper divisors (696731239).

266522220761 is a wasteful number, since it uses less digits than its factorization.

266522220761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144799.

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 266522220761 in words is "two hundred sixty-six billion, five hundred twenty-two million, two hundred twenty thousand, seven hundred sixty-one".