26300631857 has 2 divisors, whose sum is σ = 26300631858. Its totient is φ = 26300631856.

The previous prime is 26300631829. The next prime is 26300631901. The reversal of 26300631857 is 75813600362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24169055296 + 2131576561 = 155464^2 + 46169^2 .

It is a cyclic number.

It is not a de Polignac number, because 26300631857 - 2²⁶ = 26233522993 is a prime.

It is not a weakly prime, because it can be changed into another prime (26300631827) 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, 13150315928 + 13150315929.

It is an arithmetic number, because the mean of its divisors is an integer number (13150315929).

Almost surely, 2^26300631857 is an apocalyptic number.

It is an amenable number.

26300631857 is a deficient number, since it is larger than the sum of its proper divisors (1).

26300631857 is an equidigital number, since it uses as much as digits as its factorization.

26300631857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 26300631857 in words is "twenty-six billion, three hundred million, six hundred thirty-one thousand, eight hundred fifty-seven".