266020664537 has 4 divisors (see below), whose sum is σ = 267613602816. Its totient is φ = 264427726260.

The previous prime is 266020664461. The next prime is 266020664563. The reversal of 266020664537 is 735466020662.

266020664537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266020664537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 266020664491 and 266020664500.

It is not an unprimeable number, because it can be changed into a prime (266020664587) 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 3 ways as a sum of consecutive naturals, for example, 796468889 + ... + 796469222.

It is an arithmetic number, because the mean of its divisors is an integer number (66903400704).

Almost surely, 2^266020664537 is an apocalyptic number.

It is an amenable number.

266020664537 is a deficient number, since it is larger than the sum of its proper divisors (1592938279).

266020664537 is a wasteful number, since it uses less digits than its factorization.

266020664537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592938278.

The product of its (nonzero) digits is 2177280, while the sum is 47.

The spelling of 266020664537 in words is "two hundred sixty-six billion, twenty million, six hundred sixty-four thousand, five hundred thirty-seven".