266120120631 has 8 divisors (see below), whose sum is σ = 375698993904. Its totient is φ = 166977330560.

The previous prime is 266120120569. The next prime is 266120120639. The reversal of 266120120631 is 136021021662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 266120120631 - 2¹⁹ = 266119596343 is a prime.

It is a super-2 number, since 2×266120120631² (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 (266120120639) 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, 2609020740 + ... + 2609020841.

It is an arithmetic number, because the mean of its divisors is an integer number (46962374238).

Almost surely, 2^266120120631 is an apocalyptic number.

266120120631 is a deficient number, since it is larger than the sum of its proper divisors (109578873273).

266120120631 is a wasteful number, since it uses less digits than its factorization.

266120120631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5218041601.

The product of its (nonzero) digits is 5184, while the sum is 30.

The spelling of 266120120631 in words is "two hundred sixty-six billion, one hundred twenty million, one hundred twenty thousand, six hundred thirty-one".