266076653549 has 16 divisors (see below), whose sum is σ = 304946767872. Its totient is φ = 227422246128.

The previous prime is 266076653539. The next prime is 266076653561. The reversal of 266076653549 is 945356670662.

It is not a de Polignac number, because 266076653549 - 2¹⁶ = 266076588013 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 (266076653539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3514832 + ... + 3589734.

It is an arithmetic number, because the mean of its divisors is an integer number (19059172992).

Almost surely, 2^266076653549 is an apocalyptic number.

It is an amenable number.

266076653549 is a deficient number, since it is larger than the sum of its proper divisors (38870114323).

266076653549 is an equidigital number, since it uses as much as digits as its factorization.

266076653549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76336.

The product of its (nonzero) digits is 48988800, while the sum is 59.

The spelling of 266076653549 in words is "two hundred sixty-six billion, seventy-six million, six hundred fifty-three thousand, five hundred forty-nine".