26021238647 has 2 divisors, whose sum is σ = 26021238648. Its totient is φ = 26021238646.

The previous prime is 26021238643. The next prime is 26021238731. The reversal of 26021238647 is 74683212062.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26021238647 - 2² = 26021238643 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26021238643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13010619323 + 13010619324.

It is an arithmetic number, because the mean of its divisors is an integer number (13010619324).

Almost surely, 2^26021238647 is an apocalyptic number.

26021238647 is a deficient number, since it is larger than the sum of its proper divisors (1).

26021238647 is an equidigital number, since it uses as much as digits as its factorization.

26021238647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 26021238647 in words is "twenty-six billion, twenty-one million, two hundred thirty-eight thousand, six hundred forty-seven".