26346523157 has 2 divisors, whose sum is σ = 26346523158. Its totient is φ = 26346523156.

The previous prime is 26346523153. The next prime is 26346523169. The reversal of 26346523157 is 75132564362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25041796516 + 1304726641 = 158246^2 + 36121^2 .

It is a cyclic number.

It is not a de Polignac number, because 26346523157 - 2² = 26346523153 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26346523153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13173261578 + 13173261579.

It is an arithmetic number, because the mean of its divisors is an integer number (13173261579).

Almost surely, 2^26346523157 is an apocalyptic number.

It is an amenable number.

26346523157 is a deficient number, since it is larger than the sum of its proper divisors (1).

26346523157 is an equidigital number, since it uses as much as digits as its factorization.

26346523157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 44.

The spelling of 26346523157 in words is "twenty-six billion, three hundred forty-six million, five hundred twenty-three thousand, one hundred fifty-seven".