26861716807 has 2 divisors, whose sum is σ = 26861716808. Its totient is φ = 26861716806.

The previous prime is 26861716799. The next prime is 26861716823. The reversal of 26861716807 is 70861716862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26861716807 - 2³ = 26861716799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26861716897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13430858403 + 13430858404.

It is an arithmetic number, because the mean of its divisors is an integer number (13430858404).

Almost surely, 2^26861716807 is an apocalyptic number.

26861716807 is a deficient number, since it is larger than the sum of its proper divisors (1).

26861716807 is an equidigital number, since it uses as much as digits as its factorization.

26861716807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1354752, while the sum is 52.

The spelling of 26861716807 in words is "twenty-six billion, eight hundred sixty-one million, seven hundred sixteen thousand, eight hundred seven".