266412526520 has 64 divisors (see below), whose sum is σ = 685539875520. Its totient is φ = 91277558784.

The previous prime is 266412526517. The next prime is 266412526529. The reversal of 266412526520 is 25625214662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266412526529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69254 + ... + 733226.

It is an arithmetic number, because the mean of its divisors is an integer number (10711560555).

Almost surely, 2^266412526520 is an apocalyptic number.

266412526520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266412526520 is an abundant number, since it is smaller than the sum of its proper divisors (419127349000).

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

266412526520 is a wasteful number, since it uses less digits than its factorization.

266412526520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665424 (or 665420 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 266412526520 in words is "two hundred sixty-six billion, four hundred twelve million, five hundred twenty-six thousand, five hundred twenty".