26854865280 has 128 divisors (see below), whose sum is σ = 95111042400. Its totient is φ = 7161292800.

The previous prime is 26854865249. The next prime is 26854865281. The reversal of 26854865280 is 8256845862.

It is a happy number.

26854865280 is a `hidden beast` number, since 2 + 6 + 85 + 486 + 5 + 2 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26854865281) 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 15 ways as a sum of consecutive naturals, for example, 759771 + ... + 794330.

Almost surely, 2^26854865280 is an apocalyptic number.

26854865280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26854865280 is an abundant number, since it is smaller than the sum of its proper divisors (68256177120).

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

26854865280 is a wasteful number, since it uses less digits than its factorization.

26854865280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554129 (or 1554111 counting only the distinct ones).

The product of its (nonzero) digits is 7372800, while the sum is 54.

The spelling of 26854865280 in words is "twenty-six billion, eight hundred fifty-four million, eight hundred sixty-five thousand, two hundred eighty".