26866195007 has 2 divisors, whose sum is σ = 26866195008. Its totient is φ = 26866195006.

The previous prime is 26866195003. The next prime is 26866195087. The reversal of 26866195007 is 70059166862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26866195007 - 2² = 26866195003 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26866195001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13433097503 + 13433097504.

It is an arithmetic number, because the mean of its divisors is an integer number (13433097504).

Almost surely, 2^26866195007 is an apocalyptic number.

26866195007 is a deficient number, since it is larger than the sum of its proper divisors (1).

26866195007 is an equidigital number, since it uses as much as digits as its factorization.

26866195007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 26866195007 in words is "twenty-six billion, eight hundred sixty-six million, one hundred ninety-five thousand, seven".