26136218889 has 135 divisors (see below), whose sum is σ = 45502780477. Its totient is φ = 14938030800.

The previous prime is 26136218887. The next prime is 26136218891. The reversal of 26136218889 is 98881263162.

The square root of 26136218889 is 161667.

It is a perfect power (a square), and thus also a powerful number.

26136218889 is a `hidden beast` number, since 2 + 6 + 1 + 3 + 621 + 8 + 8 + 8 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (26136218887) and next prime (26136218891).

It is not a de Polignac number, because 26136218889 - 2¹ = 26136218887 is a prime.

Its product of digits (1990656) is a multiple of the sum of its prime divisors (108).

It is not an unprimeable number, because it can be changed into a prime (26136218887) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 368115724 + ... + 368115794.

Almost surely, 2^26136218889 is an apocalyptic number.

26136218889 is the 161667-th square number.

26136218889 is the 80834-th centered octagonal number.

It is an amenable number.

26136218889 is a deficient number, since it is larger than the sum of its proper divisors (19366561588).

26136218889 is an equidigital number, since it uses as much as digits as its factorization.

26136218889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 108 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

It can be divided in two parts, 26136 and 218889, that added together give a square (245025 = 495²).

The spelling of 26136218889 in words is "twenty-six billion, one hundred thirty-six million, two hundred eighteen thousand, eight hundred eighty-nine".