26920117843 has 4 divisors (see below), whose sum is σ = 26959533048. Its totient is φ = 26880702640.

The previous prime is 26920117841. The next prime is 26920117849. The reversal of 26920117843 is 34871102962.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34871102962 = 2 ⋅17435551481.

It is a cyclic number.

It is not a de Polignac number, because 26920117843 - 2¹ = 26920117841 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26920117843.

It is not an unprimeable number, because it can be changed into a prime (26920117841) 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, 19706578 + ... + 19707943.

It is an arithmetic number, because the mean of its divisors is an integer number (6739883262).

Almost surely, 2^26920117843 is an apocalyptic number.

26920117843 is a deficient number, since it is larger than the sum of its proper divisors (39415205).

26920117843 is an equidigital number, since it uses as much as digits as its factorization.

26920117843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39415204.

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 26920117843 in words is "twenty-six billion, nine hundred twenty million, one hundred seventeen thousand, eight hundred forty-three".