26649360280 has 16 divisors (see below), whose sum is σ = 59961060720. Its totient is φ = 10659744096.

The previous prime is 26649360173. The next prime is 26649360289. The reversal of 26649360280 is 8206394662.

It is a self number, because there is not a number n which added to its sum of digits gives 26649360280.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26649360289) 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 3 ways as a sum of consecutive naturals, for example, 333116964 + ... + 333117043.

It is an arithmetic number, because the mean of its divisors is an integer number (3747566295).

Almost surely, 2^26649360280 is an apocalyptic number.

26649360280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26649360280 is an abundant number, since it is smaller than the sum of its proper divisors (33311700440).

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

26649360280 is a wasteful number, since it uses less digits than its factorization.

26649360280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666234018 (or 666234014 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 46.

The spelling of 26649360280 in words is "twenty-six billion, six hundred forty-nine million, three hundred sixty thousand, two hundred eighty".