266293274040 has 192 divisors, whose sum is σ = 878463986400. Its totient is φ = 69951568896.

The previous prime is 266293274033. The next prime is 266293274047. The reversal of 266293274040 is 40472392662.

266293274040 is a `hidden beast` number, since 266 + 29 + 327 + 4 + 0 + 40 = 666.

266293274040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (266293274033) and next prime (266293274047).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266293274047) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6768907 + ... + 6808133.

Almost surely, 2^266293274040 is an apocalyptic number.

266293274040 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 266293274040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (439231993200).

266293274040 is an abundant number, since it is smaller than the sum of its proper divisors (612170712360).

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

266293274040 is a wasteful number, since it uses less digits than its factorization.

266293274040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39526 (or 39519 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The spelling of 266293274040 in words is "two hundred sixty-six billion, two hundred ninety-three million, two hundred seventy-four thousand, forty".