26521263416 has 8 divisors (see below), whose sum is σ = 49727368920. Its totient is φ = 13260631704.

The previous prime is 26521263409. The next prime is 26521263421. The reversal of 26521263416 is 61436212562.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 26521263416.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1657578956 + ... + 1657578971.

It is an arithmetic number, because the mean of its divisors is an integer number (6215921115).

Almost surely, 2^26521263416 is an apocalyptic number.

It is an amenable number.

26521263416 is a deficient number, since it is larger than the sum of its proper divisors (23206105504).

26521263416 is a wasteful number, since it uses less digits than its factorization.

26521263416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3315157933 (or 3315157929 counting only the distinct ones).

The product of its digits is 103680, while the sum is 38.

Adding to 26521263416 its reverse (61436212562), we get a palindrome (87957475978).

The spelling of 26521263416 in words is "twenty-six billion, five hundred twenty-one million, two hundred sixty-three thousand, four hundred sixteen".