26570213317 has 2 divisors, whose sum is σ = 26570213318. Its totient is φ = 26570213316.

The previous prime is 26570213281. The next prime is 26570213321. The reversal of 26570213317 is 71331207562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23553347841 + 3016865476 = 153471^2 + 54926^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26570213317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26570213717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13285106658 + 13285106659.

It is an arithmetic number, because the mean of its divisors is an integer number (13285106659).

Almost surely, 2^26570213317 is an apocalyptic number.

It is an amenable number.

26570213317 is a deficient number, since it is larger than the sum of its proper divisors (1).

26570213317 is an equidigital number, since it uses as much as digits as its factorization.

26570213317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 37.

The spelling of 26570213317 in words is "twenty-six billion, five hundred seventy million, two hundred thirteen thousand, three hundred seventeen".