26798999616 has 189 divisors, whose sum is σ = 81296595471. Its totient is φ = 8439268608.

The previous prime is 26798999603. The next prime is 26798999639. The reversal of 26798999616 is 61699989762.

The square root of 26798999616 is 163704.

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

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 74648845 + ... + 74649203.

Almost surely, 2^26798999616 is an apocalyptic number.

26798999616 is the 163704-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26798999616

26798999616 is an abundant number, since it is smaller than the sum of its proper divisors (54497595855).

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

26798999616 is an equidigital number, since it uses as much as digits as its factorization.

26798999616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774 (or 383 counting only the distinct ones).

The product of its digits is 158723712, while the sum is 72.

The spelling of 26798999616 in words is "twenty-six billion, seven hundred ninety-eight million, nine hundred ninety-nine thousand, six hundred sixteen".