266946949645 has 16 divisors (see below), whose sum is σ = 351856851840. Its totient is φ = 193521265344.

The previous prime is 266946949603. The next prime is 266946949657. The reversal of 266946949645 is 546949649662.

It is a happy number.

266946949645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 266946949645 - 2²³ = 266938561037 is a prime.

It is a super-3 number, since 3×266946949645³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 61084074 + ... + 61088443.

It is an arithmetic number, because the mean of its divisors is an integer number (21991053240).

Almost surely, 2^266946949645 is an apocalyptic number.

It is an amenable number.

266946949645 is a deficient number, since it is larger than the sum of its proper divisors (84909902195).

266946949645 is a wasteful number, since it uses less digits than its factorization.

266946949645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122172564.

The product of its digits is 604661760, while the sum is 70.

The spelling of 266946949645 in words is "two hundred sixty-six billion, nine hundred forty-six million, nine hundred forty-nine thousand, six hundred forty-five".