266004156442620 has 24 divisors (see below), whose sum is σ = 744811638039504. Its totient is φ = 70934441718016.

The previous prime is 266004156442597. The next prime is 266004156442621. The reversal of 266004156442620 is 26244651400662.

It is a happy number.

It is a super-2 number, since 2×266004156442620² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 266004156442620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266004156442621) 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, 2216701303629 + ... + 2216701303748.

It is an arithmetic number, because the mean of its divisors is an integer number (31033818251646).

Almost surely, 2^{266004156442620} is an apocalyptic number.

266004156442620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266004156442620 is an abundant number, since it is smaller than the sum of its proper divisors (478807481596884).

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

266004156442620 is a wasteful number, since it uses less digits than its factorization.

266004156442620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4433402607389 (or 4433402607387 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 48.

The spelling of 266004156442620 in words is "two hundred sixty-six trillion, four billion, one hundred fifty-six million, four hundred forty-two thousand, six hundred twenty".