26722989568 has 40 divisors (see below), whose sum is σ = 58247778600. Its totient is φ = 12146810880.

The previous prime is 26722989563. The next prime is 26722989569. The reversal of 26722989568 is 86598922762.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26722989563) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2366793 + ... + 2378056.

It is an arithmetic number, because the mean of its divisors is an integer number (1456194465).

Almost surely, 2^26722989568 is an apocalyptic number.

It is an amenable number.

26722989568 is an abundant number, since it is smaller than the sum of its proper divisors (31524789032).

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

26722989568 is an equidigital number, since it uses as much as digits as its factorization.

26722989568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4744878 (or 4744862 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 64.

The spelling of 26722989568 in words is "twenty-six billion, seven hundred twenty-two million, nine hundred eighty-nine thousand, five hundred sixty-eight".