26391148544 has 48 divisors (see below), whose sum is σ = 52806695760. Its totient is φ = 13186252800.

The previous prime is 26391148541. The next prime is 26391148573. The reversal of 26391148544 is 44584119362.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26391148541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3586469 + ... + 3593819.

It is an arithmetic number, because the mean of its divisors is an integer number (1100139495).

Almost surely, 2^26391148544 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 26391148544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26403347880).

26391148544 is an abundant number, since it is smaller than the sum of its proper divisors (26415547216).

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

26391148544 is an equidigital number, since it uses as much as digits as its factorization.

26391148544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9126 (or 9106 counting only the distinct ones).

The product of its digits is 829440, while the sum is 47.

The spelling of 26391148544 in words is "twenty-six billion, three hundred ninety-one million, one hundred forty-eight thousand, five hundred forty-four".