26066190394 has 4 divisors (see below), whose sum is σ = 39099285594. Its totient is φ = 13033095196.

The previous prime is 26066190341. The next prime is 26066190401. The reversal of 26066190394 is 49309166062.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19803525625 + 6262664769 = 140725^2 + 79137^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6516547597 + ... + 6516547600.

Almost surely, 2^26066190394 is an apocalyptic number.

26066190394 is a deficient number, since it is larger than the sum of its proper divisors (13033095200).

26066190394 is a wasteful number, since it uses less digits than its factorization.

26066190394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13033095199.

The product of its (nonzero) digits is 419904, while the sum is 46.

The spelling of 26066190394 in words is "twenty-six billion, sixty-six million, one hundred ninety thousand, three hundred ninety-four".