266041026121660 has 12 divisors (see below), whose sum is σ = 558686154855528. Its totient is φ = 106416410448656.

The previous prime is 266041026121547. The next prime is 266041026121691. The reversal of 266041026121660 is 66121620140662.

It is a super-2 number, since 2×266041026121660² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6651025653022 + ... + 6651025653061.

It is an arithmetic number, because the mean of its divisors is an integer number (46557179571294).

Almost surely, 2^{266041026121660} is an apocalyptic number.

266041026121660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266041026121660 is an abundant number, since it is smaller than the sum of its proper divisors (292645128733868).

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

266041026121660 is a wasteful number, since it uses less digits than its factorization.

266041026121660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13302051306092 (or 13302051306090 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 266041026121660 in words is "two hundred sixty-six trillion, forty-one billion, twenty-six million, one hundred twenty-one thousand, six hundred sixty".