266713430997 has 16 divisors (see below), whose sum is σ = 391121498880. Its totient is φ = 160639184832.

The previous prime is 266713430957. The next prime is 266713431007. The reversal of 266713430997 is 799034317662.

It is not a de Polignac number, because 266713430997 - 2⁷ = 266713430869 is a prime.

It is a super-2 number, since 2×266713430997² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266713430957) 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, 72751422 + ... + 72755087.

It is an arithmetic number, because the mean of its divisors is an integer number (24445093680).

Almost surely, 2^266713430997 is an apocalyptic number.

It is an amenable number.

266713430997 is a deficient number, since it is larger than the sum of its proper divisors (124408067883).

266713430997 is a wasteful number, since it uses less digits than its factorization.

266713430997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145506572.

The product of its (nonzero) digits is 10287648, while the sum is 57.

The spelling of 266713430997 in words is "two hundred sixty-six billion, seven hundred thirteen million, four hundred thirty thousand, nine hundred ninety-seven".