266402252661260 has 96 divisors (see below), whose sum is σ = 593869734968832. Its totient is φ = 100035989314560.

The previous prime is 266402252661227. The next prime is 266402252661287. The reversal of 266402252661260 is 62166252204662.

It is a junction number, because it is equal to n+sod(n) for n = 266402252661199 and 266402252661208.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 501449729 + ... + 501980711.

It is an arithmetic number, because the mean of its divisors is an integer number (6186143072592).

Almost surely, 2^{266402252661260} is an apocalyptic number.

266402252661260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266402252661260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296934867484416).

266402252661260 is an abundant number, since it is smaller than the sum of its proper divisors (327467482307572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266402252661260 is a wasteful number, since it uses less digits than its factorization.

266402252661260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534783 (or 534781 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 50.

The spelling of 266402252661260 in words is "two hundred sixty-six trillion, four hundred two billion, two hundred fifty-two million, six hundred sixty-one thousand, two hundred sixty".