26379819480 has 128 divisors (see below), whose sum is σ = 90493678080. Its totient is φ = 6026434560.

The previous prime is 26379819457. The next prime is 26379819491. The reversal of 26379819480 is 8491897362.

It is a self number, because there is not a number n which added to its sum of digits gives 26379819480.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1782672 + ... + 1797408.

It is an arithmetic number, because the mean of its divisors is an integer number (706981860).

Almost surely, 2^26379819480 is an apocalyptic number.

26379819480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26379819480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45246839040).

26379819480 is an abundant number, since it is smaller than the sum of its proper divisors (64113858600).

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

26379819480 is a wasteful number, since it uses less digits than its factorization.

26379819480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16889 (or 16885 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 57.

The spelling of 26379819480 in words is "twenty-six billion, three hundred seventy-nine million, eight hundred nineteen thousand, four hundred eighty".