26328979404 has 144 divisors (see below), whose sum is σ = 82056566592. Its totient is φ = 6931685376.

The previous prime is 26328979399. The next prime is 26328979409. The reversal of 26328979404 is 40497982362.

It is an interprime number because it is at equal distance from previous prime (26328979399) and next prime (26328979409).

It is not an unprimeable number, because it can be changed into a prime (26328979409) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1935892 + ... + 1949444.

It is an arithmetic number, because the mean of its divisors is an integer number (569837268).

Almost surely, 2^26328979404 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 26328979404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41028283296).

26328979404 is an abundant number, since it is smaller than the sum of its proper divisors (55727587188).

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

26328979404 is a wasteful number, since it uses less digits than its factorization.

26328979404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14176 (or 14171 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 26328979404 in words is "twenty-six billion, three hundred twenty-eight million, nine hundred seventy-nine thousand, four hundred four".