26988292128 has 144 divisors (see below), whose sum is σ = 82479811680. Its totient is φ = 7704474624.

The previous prime is 26988292117. The next prime is 26988292157. The reversal of 26988292128 is 82129288962.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10248700 + ... + 10251332.

It is an arithmetic number, because the mean of its divisors is an integer number (572776470).

Almost surely, 2^26988292128 is an apocalyptic number.

26988292128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26988292128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41239905840).

26988292128 is an abundant number, since it is smaller than the sum of its proper divisors (55491519552).

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

26988292128 is a wasteful number, since it uses less digits than its factorization.

26988292128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4839 (or 4824 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 57.

The spelling of 26988292128 in words is "twenty-six billion, nine hundred eighty-eight million, two hundred ninety-two thousand, one hundred twenty-eight".