26617268807 has 4 divisors (see below), whose sum is σ = 27119481480. Its totient is φ = 26115056136.

The previous prime is 26617268803. The next prime is 26617268827. The reversal of 26617268807 is 70886271662.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26617268807 - 2² = 26617268803 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53), and also a Moran number because the ratio is a prime number: 502212619 = 26617268807 / (2 + 6 + 6 + 1 + 7 + 2 + 6 + 8 + 8 + 0 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26617268803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251106257 + ... + 251106362.

It is an arithmetic number, because the mean of its divisors is an integer number (6779870370).

Almost surely, 2^26617268807 is an apocalyptic number.

26617268807 is a deficient number, since it is larger than the sum of its proper divisors (502212673).

26617268807 is an equidigital number, since it uses as much as digits as its factorization.

26617268807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502212672.

The product of its (nonzero) digits is 2709504, while the sum is 53.

The spelling of 26617268807 in words is "twenty-six billion, six hundred seventeen million, two hundred sixty-eight thousand, eight hundred seven".