26454788369 has 8 divisors (see below), whose sum is σ = 26730897480. Its totient is φ = 26178748416.

The previous prime is 26454788359. The next prime is 26454788383. The reversal of 26454788369 is 96388745462.

It can be written as a sum of positive squares in 4 ways, for example, as 13897344769 + 12557443600 = 117887^2 + 112060^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26454788369 is a prime.

It is a super-2 number, since 2×26454788369² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26454788309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1180937 + ... + 1203129.

It is an arithmetic number, because the mean of its divisors is an integer number (3341362185).

Almost surely, 2^26454788369 is an apocalyptic number.

It is an amenable number.

26454788369 is a deficient number, since it is larger than the sum of its proper divisors (276109111).

26454788369 is a wasteful number, since it uses less digits than its factorization.

26454788369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34579.

The product of its digits is 69672960, while the sum is 62.

The spelling of 26454788369 in words is "twenty-six billion, four hundred fifty-four million, seven hundred eighty-eight thousand, three hundred sixty-nine".