26920602866 has 4 divisors (see below), whose sum is σ = 40380904302. Its totient is φ = 13460301432.

The previous prime is 26920602851. The next prime is 26920602883. The reversal of 26920602866 is 66820602962.

It is a happy number.

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., 26187330625 + 733272241 = 161825^2 + 27079^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 26920602866.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6730150715 + ... + 6730150718.

Almost surely, 2^26920602866 is an apocalyptic number.

26920602866 is a deficient number, since it is larger than the sum of its proper divisors (13460301436).

26920602866 is a wasteful number, since it uses less digits than its factorization.

26920602866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13460301435.

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 26920602866 in words is "twenty-six billion, nine hundred twenty million, six hundred two thousand, eight hundred sixty-six".