26468632820 has 54 divisors (see below), whose sum is σ = 64671532758. Its totient is φ = 9073213632.

The previous prime is 26468632747. The next prime is 26468632831. The reversal of 26468632820 is 2823686462.

It can be written as a sum of positive squares in 3 ways, for example, as 2009549584 + 24459083236 = 44828^2 + 156394^2 .

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 in 17 ways as a sum of consecutive naturals, for example, 5090462 + ... + 5095658.

It is an arithmetic number, because the mean of its divisors is an integer number (1197620977).

Almost surely, 2^26468632820 is an apocalyptic number.

26468632820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26468632820 is an abundant number, since it is smaller than the sum of its proper divisors (38202899938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26468632820 is an frugal number, since it uses more digits than its factorization.

26468632820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10417 (or 5211 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 47.

The spelling of 26468632820 in words is "twenty-six billion, four hundred sixty-eight million, six hundred thirty-two thousand, eight hundred twenty".