26980209843 has 4 divisors (see below), whose sum is σ = 35973613128. Its totient is φ = 17986806560.

The previous prime is 26980209803. The next prime is 26980209877. The reversal of 26980209843 is 34890208962.

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 26980209843 - 2⁸ = 26980209587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26980209803) 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, 4496701638 + ... + 4496701643.

It is an arithmetic number, because the mean of its divisors is an integer number (8993403282).

Almost surely, 2^26980209843 is an apocalyptic number.

26980209843 is a deficient number, since it is larger than the sum of its proper divisors (8993403285).

26980209843 is an equidigital number, since it uses as much as digits as its factorization.

26980209843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8993403284.

The product of its (nonzero) digits is 1492992, while the sum is 51.

The spelling of 26980209843 in words is "twenty-six billion, nine hundred eighty million, two hundred nine thousand, eight hundred forty-three".