26389001380 has 96 divisors (see below), whose sum is σ = 65942779392. Its totient is φ = 8682163200.

The previous prime is 26389001363. The next prime is 26389001393. The reversal of 26389001380 is 8310098362.

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, 312457 + ... + 387823.

It is an arithmetic number, because the mean of its divisors is an integer number (686903952).

Almost surely, 2^26389001380 is an apocalyptic number.

26389001380 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 26389001380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32971389696).

26389001380 is an abundant number, since it is smaller than the sum of its proper divisors (39553778012).

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

26389001380 is a wasteful number, since it uses less digits than its factorization.

26389001380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75485 (or 75483 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 26389001380 in words is "twenty-six billion, three hundred eighty-nine million, one thousand, three hundred eighty".