26879198436 has 60 divisors (see below), whose sum is σ = 70359561580. Its totient is φ = 8947998720.

The previous prime is 26879198431. The next prime is 26879198441. The reversal of 26879198436 is 63489197862.

26879198436 is a `hidden beast` number, since 2 + 6 + 8 + 7 + 9 + 198 + 436 = 666.

It is an interprime number because it is at equal distance from previous prime (26879198431) and next prime (26879198441).

It can be written as a sum of positive squares in 2 ways, for example, as 8493465600 + 18385732836 = 92160^2 + 135594^2 .

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (26879198431) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 195216 + ... + 303096.

Almost surely, 2^26879198436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26879198436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35179780790).

26879198436 is an abundant number, since it is smaller than the sum of its proper divisors (43480363144).

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

26879198436 is a wasteful number, since it uses less digits than its factorization.

26879198436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108666 (or 108655 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 63.

The spelling of 26879198436 in words is "twenty-six billion, eight hundred seventy-nine million, one hundred ninety-eight thousand, four hundred thirty-six".