26616828157 has 2 divisors, whose sum is σ = 26616828158. Its totient is φ = 26616828156.

The previous prime is 26616828151. The next prime is 26616828193. The reversal of 26616828157 is 75182861662.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15781891876 + 10834936281 = 125626^2 + 104091^2 .

It is a cyclic number.

It is not a de Polignac number, because 26616828157 - 2³¹ = 24469344509 is a prime.

It is a super-2 number, since 2×26616828157² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26616828151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13308414078 + 13308414079.

It is an arithmetic number, because the mean of its divisors is an integer number (13308414079).

Almost surely, 2^26616828157 is an apocalyptic number.

It is an amenable number.

26616828157 is a deficient number, since it is larger than the sum of its proper divisors (1).

26616828157 is an equidigital number, since it uses as much as digits as its factorization.

26616828157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1935360, while the sum is 52.

The spelling of 26616828157 in words is "twenty-six billion, six hundred sixteen million, eight hundred twenty-eight thousand, one hundred fifty-seven".