266340188090 has 16 divisors (see below), whose sum is σ = 479447071488. Its totient is φ = 106528356816.

The previous prime is 266340188077. The next prime is 266340188137. The reversal of 266340188090 is 90881043662.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 818822 + ... + 1096881.

It is an arithmetic number, because the mean of its divisors is an integer number (29965441968).

Almost surely, 2^266340188090 is an apocalyptic number.

266340188090 is a deficient number, since it is larger than the sum of its proper divisors (213106883398).

266340188090 is a wasteful number, since it uses less digits than its factorization.

266340188090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1929613.

The product of its (nonzero) digits is 497664, while the sum is 47.

The spelling of 266340188090 in words is "two hundred sixty-six billion, three hundred forty million, one hundred eighty-eight thousand, ninety".