266190091662 has 256 divisors, whose sum is σ = 649305953280. Its totient is φ = 71801856000.

The previous prime is 266190091579. The next prime is 266190091729.

266190091662 is nontrivially palindromic in base 10.

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 127 ways as a sum of consecutive naturals, for example, 351637788 + ... + 351638544.

It is an arithmetic number, because the mean of its divisors is an integer number (2536351380).

Almost surely, 2^266190091662 is an apocalyptic number.

266190091662 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 266190091662, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324652976640).

266190091662 is an abundant number, since it is smaller than the sum of its proper divisors (383115861618).

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

266190091662 is a wasteful number, since it uses less digits than its factorization.

266190091662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027.

The product of its (nonzero) digits is 419904, while the sum is 48.

The spelling of 266190091662 in words is "two hundred sixty-six billion, one hundred ninety million, ninety-one thousand, six hundred sixty-two".