266782223190 has 128 divisors (see below), whose sum is σ = 743120013312. Its totient is φ = 60038092800.

The previous prime is 266782223189. The next prime is 266782223243. The reversal of 266782223190 is 91322287662.

It is a super-2 number, since 2×266782223190² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3546004 + ... + 3620456.

It is an arithmetic number, because the mean of its divisors is an integer number (5805625104).

Almost surely, 2^266782223190 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266782223190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (371560006656).

266782223190 is an abundant number, since it is smaller than the sum of its proper divisors (476337790122).

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

266782223190 is a wasteful number, since it uses less digits than its factorization.

266782223190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74734.

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 266782223190 in words is "two hundred sixty-six billion, seven hundred eighty-two million, two hundred twenty-three thousand, one hundred ninety".