26980894447 has 12 divisors (see below), whose sum is σ = 29517211920. Its totient is φ = 24648668928.

The previous prime is 26980894403. The next prime is 26980894483. The reversal of 26980894447 is 74449808962.

It is not a de Polignac number, because 26980894447 - 2¹⁹ = 26980370159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26980894847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 806547 + ... + 839332.

It is an arithmetic number, because the mean of its divisors is an integer number (2459767660).

Almost surely, 2^26980894447 is an apocalyptic number.

26980894447 is a deficient number, since it is larger than the sum of its proper divisors (2536317473).

26980894447 is a wasteful number, since it uses less digits than its factorization.

26980894447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646002 (or 1645989 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 61.

The spelling of 26980894447 in words is "twenty-six billion, nine hundred eighty million, eight hundred ninety-four thousand, four hundred forty-seven".