26648277049 has 3 divisors (see below), whose sum is σ = 26648440293. Its totient is φ = 26648113806.

The previous prime is 26648277041. The next prime is 26648277083. The reversal of 26648277049 is 94077284662.

The square root of 26648277049 is 163243.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 26648277049 - 2³ = 26648277041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26648277041) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 81622 + ... + 244864.

It is an arithmetic number, because the mean of its divisors is an integer number (8882813431).

Almost surely, 2^26648277049 is an apocalyptic number.

26648277049 is the 163243-rd square number.

26648277049 is the 81622-nd centered octagonal number.

It is an amenable number.

26648277049 is a deficient number, since it is larger than the sum of its proper divisors (163244).

26648277049 is an frugal number, since it uses more digits than its factorization.

26648277049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326486 (or 163243 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 55.

The spelling of 26648277049 in words is "twenty-six billion, six hundred forty-eight million, two hundred seventy-seven thousand, forty-nine".