26647982988 has 96 divisors (see below), whose sum is σ = 71633866752. Its totient is φ = 7630920000.

The previous prime is 26647982981. The next prime is 26647983001. The reversal of 26647982988 is 88928974662.

It is a super-2 number, since 2×26647982988² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is not an unprimeable number, because it can be changed into a prime (26647982981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199113 + ... + 304863.

It is an arithmetic number, because the mean of its divisors is an integer number (746186112).

Almost surely, 2^26647982988 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 26647982988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35816933376).

26647982988 is an abundant number, since it is smaller than the sum of its proper divisors (44985883764).

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

26647982988 is a wasteful number, since it uses less digits than its factorization.

26647982988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105875 (or 105873 counting only the distinct ones).

The product of its digits is 167215104, while the sum is 69.

The spelling of 26647982988 in words is "twenty-six billion, six hundred forty-seven million, nine hundred eighty-two thousand, nine hundred eighty-eight".