266075225640 has 96 divisors (see below), whose sum is σ = 988279418880. Its totient is φ = 60817193856.

The previous prime is 266075225639. The next prime is 266075225743. The reversal of 266075225640 is 46522570662.

266075225640 is a `hidden beast` number, since 2 + 6 + 60 + 7 + 5 + 22 + 564 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52790184 + ... + 52795223.

It is an arithmetic number, because the mean of its divisors is an integer number (10294577280).

Almost surely, 2^266075225640 is an apocalyptic number.

266075225640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266075225640 is an abundant number, since it is smaller than the sum of its proper divisors (722204193240).

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

266075225640 is a wasteful number, since it uses less digits than its factorization.

266075225640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105585431 (or 105585424 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 45.

The spelling of 266075225640 in words is "two hundred sixty-six billion, seventy-five million, two hundred twenty-five thousand, six hundred forty".