26130730357 has 2 divisors, whose sum is σ = 26130730358. Its totient is φ = 26130730356.

The previous prime is 26130730319. The next prime is 26130730387. The reversal of 26130730357 is 75303703162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26091617841 + 39112516 = 161529^2 + 6254^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26130730357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26130730387) 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, 13065365178 + 13065365179.

It is an arithmetic number, because the mean of its divisors is an integer number (13065365179).

Almost surely, 2^26130730357 is an apocalyptic number.

It is an amenable number.

26130730357 is a deficient number, since it is larger than the sum of its proper divisors (1).

26130730357 is an equidigital number, since it uses as much as digits as its factorization.

26130730357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 79380, while the sum is 37.

The spelling of 26130730357 in words is "twenty-six billion, one hundred thirty million, seven hundred thirty thousand, three hundred fifty-seven".