26098438789 has 8 divisors (see below), whose sum is σ = 26140703480. Its totient is φ = 26056209600.

The previous prime is 26098438781. The next prime is 26098438837. The reversal of 26098438789 is 98783489062.

It can be written as a sum of positive squares in 4 ways, for example, as 9910202500 + 16188236289 = 99550^2 + 127233^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26098438789 - 2³ = 26098438781 is a prime.

It is a super-2 number, since 2×26098438789² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26098438789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26098438781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1725319 + ... + 1740379.

It is an arithmetic number, because the mean of its divisors is an integer number (3267587935).

Almost surely, 2^26098438789 is an apocalyptic number.

It is an amenable number.

26098438789 is a deficient number, since it is larger than the sum of its proper divisors (42264691).

26098438789 is a wasteful number, since it uses less digits than its factorization.

26098438789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17751.

The product of its (nonzero) digits is 41803776, while the sum is 64.

The spelling of 26098438789 in words is "twenty-six billion, ninety-eight million, four hundred thirty-eight thousand, seven hundred eighty-nine".