26215677247 has 2 divisors, whose sum is σ = 26215677248. Its totient is φ = 26215677246.

The previous prime is 26215677167. The next prime is 26215677251. The reversal of 26215677247 is 74277651262.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26215677247 - 2¹⁹ = 26215152959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26215677247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26215677287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13107838623 + 13107838624.

It is an arithmetic number, because the mean of its divisors is an integer number (13107838624).

Almost surely, 2^26215677247 is an apocalyptic number.

26215677247 is a deficient number, since it is larger than the sum of its proper divisors (1).

26215677247 is an equidigital number, since it uses as much as digits as its factorization.

26215677247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1975680, while the sum is 49.

The spelling of 26215677247 in words is "twenty-six billion, two hundred fifteen million, six hundred seventy-seven thousand, two hundred forty-seven".