26781298895 has 16 divisors (see below), whose sum is σ = 34731998112. Its totient is φ = 19707062400.

The previous prime is 26781298871. The next prime is 26781298897. The reversal of 26781298895 is 59889218762.

It is not a de Polignac number, because 26781298895 - 2²⁰ = 26780250319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (65).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26781298897) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 709556 + ... + 746345.

It is an arithmetic number, because the mean of its divisors is an integer number (2170749882).

Almost surely, 2^26781298895 is an apocalyptic number.

26781298895 is a deficient number, since it is larger than the sum of its proper divisors (7950699217).

26781298895 is a wasteful number, since it uses less digits than its factorization.

26781298895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456202.

The product of its digits is 34836480, while the sum is 65.

The spelling of 26781298895 in words is "twenty-six billion, seven hundred eighty-one million, two hundred ninety-eight thousand, eight hundred ninety-five".