26091445380 has 576 divisors, whose sum is σ = 100371393024. Its totient is φ = 4926873600.

The previous prime is 26091445361. The next prime is 26091445417. The reversal of 26091445380 is 8354419062.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 48227910 + ... + 48228450.

Almost surely, 2^26091445380 is an apocalyptic number.

26091445380 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 26091445380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50185696512).

26091445380 is an abundant number, since it is smaller than the sum of its proper divisors (74279947644).

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

26091445380 is a wasteful number, since it uses less digits than its factorization.

26091445380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668 (or 655 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 26091445380 in words is "twenty-six billion, ninety-one million, four hundred forty-five thousand, three hundred eighty".