26616828506 has 4 divisors (see below), whose sum is σ = 39925242762. Its totient is φ = 13308414252.

The previous prime is 26616828503. The next prime is 26616828587. The reversal of 26616828506 is 60582861662.

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., 23530026025 + 3086802481 = 153395^2 + 55559^2 .

It is not an unprimeable number, because it can be changed into a prime (26616828503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6654207125 + ... + 6654207128.

Almost surely, 2^26616828506 is an apocalyptic number.

26616828506 is a deficient number, since it is larger than the sum of its proper divisors (13308414256).

26616828506 is a wasteful number, since it uses less digits than its factorization.

26616828506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13308414255.

The product of its (nonzero) digits is 1658880, while the sum is 50.

The spelling of 26616828506 in words is "twenty-six billion, six hundred sixteen million, eight hundred twenty-eight thousand, five hundred six".