266453380380 has 96 divisors (see below), whose sum is σ = 816042205440. Its totient is φ = 64424263680.

The previous prime is 266453380367. The next prime is 266453380387. The reversal of 266453380380 is 83083354662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266453380387) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 282469 + ... + 782748.

It is an arithmetic number, because the mean of its divisors is an integer number (8500439640).

Almost surely, 2^266453380380 is an apocalyptic number.

266453380380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266453380380 is an abundant number, since it is smaller than the sum of its proper divisors (549588825060).

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

266453380380 is a wasteful number, since it uses less digits than its factorization.

266453380380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065619 (or 1065617 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 48.

The spelling of 266453380380 in words is "two hundred sixty-six billion, four hundred fifty-three million, three hundred eighty thousand, three hundred eighty".