26271228157 has 2 divisors, whose sum is σ = 26271228158. Its totient is φ = 26271228156.

The previous prime is 26271228133. The next prime is 26271228169. The reversal of 26271228157 is 75182217262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25454926116 + 816302041 = 159546^2 + 28571^2 .

It is a cyclic number.

It is not a de Polignac number, because 26271228157 - 2⁷ = 26271228029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26271228187) 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, 13135614078 + 13135614079.

It is an arithmetic number, because the mean of its divisors is an integer number (13135614079).

Almost surely, 2^26271228157 is an apocalyptic number.

It is an amenable number.

26271228157 is a deficient number, since it is larger than the sum of its proper divisors (1).

26271228157 is an equidigital number, since it uses as much as digits as its factorization.

26271228157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188160, while the sum is 43.

The spelling of 26271228157 in words is "twenty-six billion, two hundred seventy-one million, two hundred twenty-eight thousand, one hundred fifty-seven".