26747899904 has 156 divisors (see below), whose sum is σ = 60854051580. Its totient is φ = 11732582400.

The previous prime is 26747899901. The next prime is 26747899907. The reversal of 26747899904 is 40999874762.

It is an interprime number because it is at equal distance from previous prime (26747899901) and next prime (26747899907).

It can be written as a sum of positive squares in 2 ways, for example, as 4472934400 + 22274965504 = 66880^2 + 149248^2 .

It is not an unprimeable number, because it can be changed into a prime (26747899901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14371934 + ... + 14373794.

Almost surely, 2^26747899904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26747899904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30427025790).

26747899904 is an abundant number, since it is smaller than the sum of its proper divisors (34106151676).

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

26747899904 is a wasteful number, since it uses less digits than its factorization.

26747899904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1936 (or 1903 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 65.

The spelling of 26747899904 in words is "twenty-six billion, seven hundred forty-seven million, eight hundred ninety-nine thousand, nine hundred four".