26138284507 has 2 divisors, whose sum is σ = 26138284508. Its totient is φ = 26138284506.

The previous prime is 26138284481. The next prime is 26138284583. The reversal of 26138284507 is 70548283162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26138284507 - 2²³ = 26129895899 is a prime.

It is not a weakly prime, because it can be changed into another prime (26138284807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13069142253 + 13069142254.

It is an arithmetic number, because the mean of its divisors is an integer number (13069142254).

Almost surely, 2^26138284507 is an apocalyptic number.

26138284507 is a deficient number, since it is larger than the sum of its proper divisors (1).

26138284507 is an equidigital number, since it uses as much as digits as its factorization.

26138284507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 26138284507 in words is "twenty-six billion, one hundred thirty-eight million, two hundred eighty-four thousand, five hundred seven".