266265526140 has 72 divisors (see below), whose sum is σ = 850181164560. Its totient is φ = 67267079424.

The previous prime is 266265526099. The next prime is 266265526147. The reversal of 266265526140 is 41625562662.

266265526140 is a `hidden beast` number, since 2 + 6 + 6 + 26 + 5 + 5 + 2 + 614 + 0 = 666.

It is a super-2 number, since 2×266265526140² (a number of 24 digits) contains 22 as substring.

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 (266265526147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38924289 + ... + 38931128.

It is an arithmetic number, because the mean of its divisors is an integer number (11808071730).

Almost surely, 2^266265526140 is an apocalyptic number.

266265526140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266265526140 is an abundant number, since it is smaller than the sum of its proper divisors (583915638420).

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

266265526140 is a wasteful number, since it uses less digits than its factorization.

266265526140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77855451 (or 77855446 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 266265526140 in words is "two hundred sixty-six billion, two hundred sixty-five million, five hundred twenty-six thousand, one hundred forty".