26280399020 has 12 divisors (see below), whose sum is σ = 55188837984. Its totient is φ = 10512159600.

The previous prime is 26280399007. The next prime is 26280399073. The reversal of 26280399020 is 2099308262.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 657009956 + ... + 657009995.

It is an arithmetic number, because the mean of its divisors is an integer number (4599069832).

Almost surely, 2^26280399020 is an apocalyptic number.

26280399020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26280399020 is an abundant number, since it is smaller than the sum of its proper divisors (28908438964).

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

26280399020 is a wasteful number, since it uses less digits than its factorization.

26280399020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314019960 (or 1314019958 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 26280399020 in words is "twenty-six billion, two hundred eighty million, three hundred ninety-nine thousand, twenty".