26381168639 has 8 divisors (see below), whose sum is σ = 30152466048. Its totient is φ = 22610511000.

The previous prime is 26381168623. The next prime is 26381168641. The reversal of 26381168639 is 93686118362.

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

It is not a de Polignac number, because 26381168639 - 2⁴ = 26381168623 is a prime.

It is a super-2 number, since 2×26381168639² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26381168039) 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, 68057 + ... + 239570.

It is an arithmetic number, because the mean of its divisors is an integer number (3769058256).

Almost surely, 2^26381168639 is an apocalyptic number.

26381168639 is a deficient number, since it is larger than the sum of its proper divisors (3771297409).

26381168639 is a wasteful number, since it uses less digits than its factorization.

26381168639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319885.

The product of its digits is 2239488, while the sum is 53.

The spelling of 26381168639 in words is "twenty-six billion, three hundred eighty-one million, one hundred sixty-eight thousand, six hundred thirty-nine".